Thanks for the Switch code...

Let's say we're looking in the wrong place, perhaps its in the 'shopping_cart' - using the line of logic that says it's got to be on the page that is being listed.

The lines 1572-1579 for me read as:

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if (isset($_GET['mod']) && $_GET['mod'] == 'auction') {
$new_products_price = zen_db_prepare_input($_POST['price']);
$sql = "select products_price from " . TABLE_PRODUCTS . " where products_id = " . (int)$_POST['products_id'];
$result = $db->execute($sql);
$old_price = $result->fields['products_price'];
$sql = "update " . TABLE_PRODUCTS . " set products_price = " . zen_db_input($new_products_price) . " where products_id = " . (int)$_POST['products_id'];
$db->execute($sql);
$sql = "update " . TABLE_PRODUCT_AUCTION_EXTRA . " set bid_buynow_price = " . zen_db_input($new_products_price) . " where products_id = " . (int)$_POST['products_id'];
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That the same for yours?