I will not bother to take up all these "too good to be true deals" which are clearly due to wrong pricing. That was what happened to our 11.11.11 deals.
You will face following scenarios:
1) Seller will refund you for their mistake.
2) If you insist them to ship, they will provide you fake code and wait for you to dispute.
3) You ignore the fake code, continue to wait for 30-45 days and you receive nothing. You file a dispute and get refunded.
You will not have the opportunity to leave any feedback. Probably it can be disabled or there has been change in policies... I guess .