Index: modules/price/commerce_price.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/commerce/modules/price/commerce_price.module,v
retrieving revision 1.25
diff -u -r1.25 commerce_price.module
--- modules/price/commerce_price.module	6 Oct 2010 15:54:43 -0000	1.25
+++ modules/price/commerce_price.module	13 Oct 2010 10:59:40 -0000
@@ -238,7 +238,7 @@
 
     // Run it through number_format() to add the decimal places in if necessary.
     if (strpos($default_price, '.') === FALSE || strpos($default_price, '.') > strlen($default_price) - 2) {
-      $default_price = number_format($default_price, 2);
+      $default_price = number_format($default_price, 2, '.', '');
     }
   }
   else {