We certainly didn't extend the Grab Bag as a slap in the face to anyone...response has been so good the past couple of days for it, and the customers were asking it be extended. :)

Am I not official enough for you? lol I am an Site Admin her for many years now and work here in the office. I will do my best to answer any of your concerns. For all  of the years I have been working here we have turned off the duplicate purchase notification for this event. I am sorry it is causing an issue for you. But if that is on, then a customer can only purchase the Grab Bag item once, and many want to purchase it multiple times. 

Please let me know if I can be of any further assistance for you.