diff --git a/app/code/Shopkeeper/PDFingPO/Plugin/Amasty/.gitkeep b/app/code/Shopkeeper/PDFingPO/Plugin/Amasty/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/app/code/Shopkeeper/PDFingPO/Plugin/Amasty/FilterPlugin.php b/app/code/Shopkeeper/PDFingPO/Plugin/Amasty/FilterPlugin.php
new file mode 100644
index 0000000..9523e7e
--- /dev/null
+++ b/app/code/Shopkeeper/PDFingPO/Plugin/Amasty/FilterPlugin.php
@@ -0,0 +1,104 @@
+<?php
+namespace Shopkeeper\PDFingPO\Plugin\Amasty;
+
+use Magento\Sales\Model\Order;
+use Magento\Catalog\Api\ProductRepositoryInterface;
+use Psr\Log\LoggerInterface;
+
+class FilterPlugin
+{
+    protected $productRepository;
+    protected $logger;
+    protected $costVariablesAdded = false;
+    
+    public function __construct(
+        ProductRepositoryInterface $productRepository,
+        LoggerInterface $logger
+    ) {
+        $this->productRepository = $productRepository;
+        $this->logger = $logger;
+    }
+    
+    /**
+     * Add variables before filtering
+     */
+    public function beforeFilter($subject, $value)
+{
+    if (!$this->costVariablesAdded) {
+        // Get existing variables
+        $variables = [];
+        if (method_exists($subject, 'getVariables')) {
+            $variables = $subject->getVariables();
+        } else {
+            // Fallback to reflection
+            try {
+                $reflection = new \ReflectionObject($subject);
+                $propNames = ['_templateVars', 'templateVars', 'variables']; // Common property names
+                foreach ($propNames as $propName) {
+                    if ($reflection->hasProperty($propName)) {
+                        $prop = $reflection->getProperty($propName);
+                        $prop->setAccessible(true);
+                        $variables = $prop->getValue($subject);
+                        break;
+                    }
+                }
+            } catch (\Exception $e) {
+                $this->logger->info('FilterPlugin: Could not access variables: ' . $e->getMessage());
+            }
+        }
+
+        if (isset($variables['order']) && $variables['order'] instanceof Order) {
+            $this->logger->info('FilterPlugin: Adding cost variables for order ' . $variables['order']->getIncrementId());
+
+            $order = $variables['order'];
+            $itemsHtml = '';
+            $totalCost = 0;
+
+            foreach ($order->getAllVisibleItems() as $item) {
+                try {
+                    $product = $this->productRepository->getById($item->getProductId());
+                    $cost = (float)($product->getCost() ?: $product->getData('cost') ?: 0);
+                } catch (\Exception $e) {
+                    $cost = 0;
+                }
+
+                $qty = (float) $item->getQtyOrdered();
+                $rowTotal = $cost * $qty;
+                $totalCost += $rowTotal;
+
+                $itemsHtml .= '<tr>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px;">' . htmlspecialchars($item->getName()) . '</td>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px;">' . htmlspecialchars($item->getSku()) . '</td>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px; text-align: center;">' . (int)$qty . '</td>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px; text-align: right;">' . $this->formatPrice($cost, $order) . '</td>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px; text-align: right;">' . $this->formatPrice($rowTotal, $order) . '</td>';
+                $itemsHtml .= '</tr>';
+            }
+
+            $shippingCost = $order->getShippingAmount() ?: 0;
+
+            // Add new variables to the array
+            $variables['items_html'] = $itemsHtml;
+            $variables['order_subtotal_cost'] = $this->formatPrice($totalCost, $order);
+            $variables['order_total_cost'] = $this->formatPrice($totalCost + $shippingCost, $order);
+            $variables['shipping_cost'] = $this->formatPrice($shippingCost, $order);
+            $variables['raw_subtotal_cost'] = $totalCost;
+            $variables['raw_total_cost'] = $totalCost + $shippingCost;
+            $variables['raw_shipping_cost'] = $shippingCost;
+
+            // Set the updated variables array
+            $subject->setVariables($variables);
+
+            $this->costVariablesAdded = true;
+            $this->logger->info('FilterPlugin: Cost variables added successfully');
+        }
+    }
+
+    return [$value];
+}
+    
+    protected function formatPrice($price, $order)
+    {
+        return $order->getOrderCurrency()->formatPrecision($price, 2, [], false);
+    }
+}
diff --git a/app/code/Shopkeeper/PDFingPO/Plugin/Amasty/TemplatePlugin.php b/app/code/Shopkeeper/PDFingPO/Plugin/Amasty/TemplatePlugin.php
new file mode 100644
index 0000000..f4a667d
--- /dev/null
+++ b/app/code/Shopkeeper/PDFingPO/Plugin/Amasty/TemplatePlugin.php
@@ -0,0 +1,170 @@
+<?php
+namespace Shopkeeper\PDFingPO\Plugin\Amasty;
+
+use Magento\Sales\Model\Order;
+use Magento\Catalog\Api\ProductRepositoryInterface;
+use Psr\Log\LoggerInterface;
+
+class TemplatePlugin
+{
+    protected $productRepository;
+    protected $logger;
+    protected $isProcessing = false;
+    
+    public function __construct(
+        ProductRepositoryInterface $productRepository,
+        LoggerInterface $logger
+    ) {
+        $this->productRepository = $productRepository;
+        $this->logger = $logger;
+    }
+    
+    /**
+     * Add cost variables before processing template
+     */
+    public function beforeProcessTemplate($subject, array $variables = [])
+    {
+        if (!$this->isProcessing) {
+            $this->logger->info('TemplatePlugin: beforeProcessTemplate called');
+            
+            // Check if we have an order in variables
+            if (isset($variables['order']) && $variables['order'] instanceof Order) {
+                $this->logger->info('TemplatePlugin: Found order ' . $variables['order']->getIncrementId());
+                $variables = $this->addCostVariables($variables, $variables['order']);
+            }
+        }
+        
+        return [$variables];
+    }
+    
+    /**
+     * Hook into setVars to add our variables
+     */
+    public function afterSetVars($subject, $result, $variables)
+    {
+        // Only process once to avoid infinite loop
+        if (!$this->isProcessing && is_array($variables) && isset($variables['order']) && $variables['order'] instanceof Order) {
+            $this->isProcessing = true;
+            
+            $this->logger->info('TemplatePlugin: afterSetVars called - adding cost variables');
+            
+            // Add cost variables
+            $enhancedVariables = $this->addCostVariables($variables, $variables['order']);
+            
+            // Set variables back
+            $subject->setVars($enhancedVariables);
+            
+            $this->isProcessing = false;
+        }
+        
+        return $result;
+    }
+    
+    /**
+     * Add cost variables to the variables array
+     */
+    protected function addCostVariables($variables, $order)
+    {
+        // Check if we already added these variables
+        if (isset($variables['items_html'])) {
+            $this->logger->info('Cost variables already exist, skipping');
+            return $variables;
+        }
+        
+        try {
+            // Build ONLY the table rows (tbody content)
+            $itemsHtml = '';
+            $totalCost = 0;
+            $itemCount = 0;
+            
+            foreach ($order->getAllVisibleItems() as $item) {
+                $itemCount++;
+                try {
+                    $product = $this->productRepository->getById($item->getProductId());
+                    $cost = (float)($product->getCost() ?: $product->getData('cost') ?: 0);
+                    
+                    $this->logger->info('Product ' . $item->getSku() . ' cost: ' . $cost);
+                } catch (\Exception $e) {
+                    $this->logger->error('Could not load product: ' . $e->getMessage());
+                    $cost = 0;
+                }
+                
+                $qty = (float) $item->getQtyOrdered();
+                $rowTotal = $cost * $qty;
+                $totalCost += $rowTotal;
+                
+                // Just the row content
+                $itemsHtml .= '<tr>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px;">' . htmlspecialchars($item->getName()) . '</td>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px;">' . htmlspecialchars($item->getSku()) . '</td>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px; text-align: center;">' . (int)$qty . '</td>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px; text-align: right;">' . $this->formatPrice($cost, $order) . '</td>';
+                $itemsHtml .= '<td style="border: 1px solid #000; padding: 5px; text-align: right;">' . $this->formatPrice($rowTotal, $order) . '</td>';
+                $itemsHtml .= '</tr>';
+            }
+            
+            $shippingCost = $order->getShippingAmount() ?: 0;
+            
+            // Create a complete table HTML for standalone use
+            $completeTableHtml = '<table style="width: 100%; border-collapse: collapse;">';
+            $completeTableHtml .= '<thead>';
+            $completeTableHtml .= '<tr>';
+            $completeTableHtml .= '<th style="border: 1px solid #000; padding: 5px; text-align: left;">Item</th>';
+            $completeTableHtml .= '<th style="border: 1px solid #000; padding: 5px; text-align: left;">SKU</th>';
+            $completeTableHtml .= '<th style="border: 1px solid #000; padding: 5px; text-align: center;">Qty</th>';
+            $completeTableHtml .= '<th style="border: 1px solid #000; padding: 5px; text-align: right;">Unit Cost</th>';
+            $completeTableHtml .= '<th style="border: 1px solid #000; padding: 5px; text-align: right;">Total Cost</th>';
+            $completeTableHtml .= '</tr>';
+            $completeTableHtml .= '</thead>';
+            $completeTableHtml .= '<tbody>';
+            $completeTableHtml .= $itemsHtml;
+            $completeTableHtml .= '</tbody>';
+            $completeTableHtml .= '<tfoot>';
+            $completeTableHtml .= '<tr>';
+            $completeTableHtml .= '<td colspan="4" style="border: 1px solid #000; padding: 5px; text-align: right; font-weight: bold;">Subtotal:</td>';
+            $completeTableHtml .= '<td style="border: 1px solid #000; padding: 5px; text-align: right; font-weight: bold;">' . $this->formatPrice($totalCost, $order) . '</td>';
+            $completeTableHtml .= '</tr>';
+            if ($shippingCost > 0) {
+                $completeTableHtml .= '<tr>';
+                $completeTableHtml .= '<td colspan="4" style="border: 1px solid #000; padding: 5px; text-align: right;">Shipping:</td>';
+                $completeTableHtml .= '<td style="border: 1px solid #000; padding: 5px; text-align: right;">' . $this->formatPrice($shippingCost, $order) . '</td>';
+                $completeTableHtml .= '</tr>';
+            }
+            $completeTableHtml .= '<tr>';
+            $completeTableHtml .= '<td colspan="4" style="border: 1px solid #000; padding: 5px; text-align: right; font-weight: bold;">Grand Total:</td>';
+            $completeTableHtml .= '<td style="border: 1px solid #000; padding: 5px; text-align: right; font-weight: bold;">' . $this->formatPrice($totalCost + $shippingCost, $order) . '</td>';
+            $completeTableHtml .= '</tr>';
+            $completeTableHtml .= '</tfoot>';
+            $completeTableHtml .= '</table>';
+            
+            $terms = $order->getData('terms') ?? ''; // Or $order->getTerms() if it's a getter
+            $termsHtml = str_replace(',', '<br>', htmlspecialchars($terms));
+            
+            // Add variables for both approaches
+            $variables['items_html'] = $itemsHtml;  // Just rows for inserting into existing table
+            $variables['items_complete_table'] = $completeTableHtml;  // Complete table
+            $variables['order_subtotal_cost'] = $this->formatPrice($totalCost, $order);
+            $variables['order_total_cost'] = $this->formatPrice($totalCost + $shippingCost, $order);
+            $variables['shipping_cost'] = $this->formatPrice($shippingCost, $order);
+            $variables['raw_subtotal_cost'] = $totalCost;
+            $variables['raw_total_cost'] = $totalCost + $shippingCost;
+            $variables['raw_shipping_cost'] = $shippingCost;
+            $variables['terms_html'] = $termsHtml;
+            
+            // Test variable
+            $variables['test_cost_injection'] = 'WORKING';
+            
+            $this->logger->info('Added cost variables - Items: ' . $itemCount . ', Total: ' . $totalCost);
+            
+        } catch (\Exception $e) {
+            $this->logger->error('Error adding cost variables: ' . $e->getMessage());
+        }
+        
+        return $variables;
+    }
+    
+    protected function formatPrice($price, $order)
+    {
+        return $order->getOrderCurrency()->formatPrecision($price, 2, [], false);
+    }
+}
diff --git a/app/code/Shopkeeper/PDFingPO/composer.json b/app/code/Shopkeeper/PDFingPO/composer.json
new file mode 100644
index 0000000..d614880
--- /dev/null
+++ b/app/code/Shopkeeper/PDFingPO/composer.json
@@ -0,0 +1,15 @@
+{
+    "name": "shopkeeper/module-pdfing-po",
+    "description": "Display product costs in purchase order PDFs (PDFingPO)",
+    "type": "magento2-module",
+    "version": "1.0.0",
+    "license": "proprietary",
+    "autoload": {
+        "files": [
+            "registration.php"
+        ],
+        "psr-4": {
+            "Shopkeeper\\PDFingPO\\": ""
+        }
+    }
+}
diff --git a/app/code/Shopkeeper/PDFingPO/etc/.gitkeep b/app/code/Shopkeeper/PDFingPO/etc/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/app/code/Shopkeeper/PDFingPO/etc/di.xml b/app/code/Shopkeeper/PDFingPO/etc/di.xml
new file mode 100644
index 0000000..9e5377e
--- /dev/null
+++ b/app/code/Shopkeeper/PDFingPO/etc/di.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    
+    <!-- Plugin for the main Template model -->
+    <type name="Amasty\PDFCustom\Model\Template">
+        <plugin name="shopkeeper_pdf_cost_template" 
+                type="Shopkeeper\PDFingPO\Plugin\Amasty\TemplatePlugin"/>
+    </type>
+    
+    <!-- Plugin for the Filter if it exists -->
+    <type name="Magento\Email\Model\Template\Filter">
+        <plugin name="shopkeeper_pdf_cost_filter" 
+                type="Shopkeeper\PDFingPO\Plugin\Amasty\FilterPlugin"/>
+    </type>
+    
+</config>
diff --git a/app/code/Shopkeeper/PDFingPO/etc/module.xml b/app/code/Shopkeeper/PDFingPO/etc/module.xml
new file mode 100644
index 0000000..a3e8f9f
--- /dev/null
+++ b/app/code/Shopkeeper/PDFingPO/etc/module.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+        xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
+    <module name="Shopkeeper_PDFingPO" setup_version="1.0.0">
+        <sequence>
+            <module name="Magento_Sales"/>
+            <module name="Magento_Catalog"/>
+        </sequence>
+    </module>
+</config>
diff --git a/app/code/Shopkeeper/PDFingPO/registration.php b/app/code/Shopkeeper/PDFingPO/registration.php
new file mode 100644
index 0000000..c6073ef
--- /dev/null
+++ b/app/code/Shopkeeper/PDFingPO/registration.php
@@ -0,0 +1,8 @@
+<?php
+use Magento\Framework\Component\ComponentRegistrar;
+
+ComponentRegistrar::register(
+    ComponentRegistrar::MODULE,
+    'Shopkeeper_PDFingPO',
+    __DIR__
+);