Yes, the duplicate purchase warning is turned off during the Grab Bag Sale. If you look at the promotional page for that you will see at the bottom that this is disabled during this time, and instructions on how to check for those before purchase through your account. http://www.renderosity.com/halloween-grab-bag-cms-17385

*Also know that during this 48 hour period, the Renderosity System Flag to check if a buyer has previously purchased a product has been disabled. This is to allow for multiple purchases to receive multiple Grab Bag items. If you question whether or not you've purchased something in the past, please click 'My Account' and use the 'Search Purchases' field.

This is done each year during this promotion. If you have made a duplicate purchase, please send an email to store@renderosity.com with your order numbers of both purchases for a single product, and we will get that taken care of for you. :)