AdaWiki

add these lines

define('MODULE_SHIPPING_USPS_LIMIT_ERROR', 'For packages over $200 we require shipment via UPS');
define('MODULE_SHIPPING_USPS_LIMIT', 200);

Change 200 to whatever you want the limit to be!

Find line 188

    if (is_array($uspsQuote)) {

and replace with

if (is_array($uspsQuote) && $_SESSION['cart']->total < MODULE_SHIPPING_USPS_LIMIT) {

Find line 281

elseif ($uspsQuote == -1) {
      $this->quotes = array('module' => $this->title,
                            'error' => MODULE_SHIPPING_USPS_TEXT_SERVER_ERROR . (MODULE_SHIPPING_USPS_SERVER=='test' ? MODULE_SHIPPING_USPS_TEXT_TEST_MODE_NOTICE : ''));
    } 

and replace with

elseif ($uspsQuote == -1) {
      $this->quotes = array('module' => $this->title,
                            'error' => MODULE_SHIPPING_USPS_TEXT_SERVER_ERROR . (MODULE_SHIPPING_USPS_SERVER=='test' ? MODULE_SHIPPING_USPS_TEXT_TEST_MODE_NOTICE : ''));
    } elseif ($_SESSION['cart']->total > MODULE_SHIPPING_USPS_LIMIT) {
      $this->quotes = array('module' => $this->title,
                            'error' => MODULE_SHIPPING_USPS_LIMIT_ERROR);
    }