They were pretty sure it's a pricing mistake. And VLSI, you are aware that the terms and conditions of these retailers always allow them to cancel orders where the pricing was clearly incorrect? Besides, I'm not looking to hurt any businesses in the hunt for shoe deals.
How would you "hurt" the business if what you said is in fact true that they have some fine print that allows them to cancel orders due to a price mistake? Whether they honor the orders that went through or not is their call.