diff --git a/commerce_price_table.module b/commerce_price_table.module
index d4ab244..448b26f 100644
--- a/commerce_price_table.module
+++ b/commerce_price_table.module
@@ -570,3 +570,76 @@ function commerce_price_table_display_quantity_headers($item) {
   }
   return $quantity_text;
 }
+
+/**
+ * Initializes a new price table field with cardinality "unlimited"
+ * and creates an individual price rule using this field.
+ */
+function commerce_price_table_field_create_field($field) {
+  if ($field['type'] == 'commerce_price_table') {
+    // The field cardinality *must* be > 1 for this module to make sense
+    // (and for the rule to work).
+    $field['cardinality'] = FIELD_CARDINALITY_UNLIMITED;
+    field_update_field($field);
+
+    $fieldname = $field['field_name'];
+    $rulename = "commerce_price_table_{$fieldname}_override_price";
+    // Ensure that no rule with the desired name exists.
+    if (rules_config_load($rulename)) {
+      return;
+    }
+
+    if ($fieldname == 'field_price_table') {
+      // Check whether there is a legacy rule.
+      if ($rule = rules_config_load('commerce_price_table_override_price')) {
+        foreach ($rule->actions() as $action) {
+          if ($action->getElementName() == 'commerce_price_table_set_price') {
+            if (isset($action->settings['price_table:select'])) {
+              if (str_replace('_', '-', $action->settings['price_table:select']) == 'commerce-line-item:commerce-product:field-price-table') {
+                return;
+              }
+            }
+          }
+        }
+      }
+    }
+
+    $rule = rules_reaction_rule();
+
+    $rule->label = t('Override price with price table (!fieldname)', array('!fieldname' => $fieldname));
+    $rule->active = TRUE;
+
+    $rule
+      ->event('commerce_product_calculate_sell_price')
+      ->condition('entity_has_field', array(
+        'entity:select' => 'commerce-line-item',
+        'field' => 'commerce_product',
+      ))
+      ->condition('entity_has_field', array(
+        'entity:select' => 'commerce-line-item:commerce-product',
+        'field' => $fieldname,
+      ))
+      ->action('commerce_price_table_set_price', array(
+        'commerce_line_item:select' => 'commerce-line-item',
+        'quantity:select' => 'commerce-line-item:quantity',
+        'price_table:select' => 'commerce-line-item:commerce-product:'.str_replace('_', '-', $fieldname),
+      ));
+
+    $rule->weight = -10;
+
+    $rule->save($rulename);
+    drupal_set_message(t('Created new rule: !label', array('!label' => $rule->label)));
+  }
+}
+
+/**
+ * Removes the price rule for this field.
+ */
+function commerce_price_table_field_delete_field($field) {
+  if ($field['type'] == 'commerce_price_table') {
+    $rulename = "commerce_price_table_{$field['field_name']}_override_price";
+    if ($rule = rules_config_load($rulename)) {
+      $rule->delete();
+    }
+  }
+}