Actually before doing this, I went to the counter in the flooring department and talked to the nice woman who originally set up and scheduled our delivery. She was helpful in trying to help me get a refund after customer service said no but was not able to help us get price matched either. Then I said to her "what would stop me from purchasing new blocks and returning them with the original receipt," to which she replied "Nothing, you are welcome to do that." Most people just wouldn't be willing to do this. I don't see how it's any different than credit card churning. You are working within the system but using it to your advantage. Totally legal. And it was Home Depot, not some mom and pop hardware store. Jesus.