As I posted earlier, I had to buy a new PC Thursday. Well, Sunday, in the Best Buy circular, the SAME PC I bought was advertised $150 cheaper than I paid for it. So, this morning, since they have a policy of refunding the difference if a product is sold cheaper within the return/exchange period, I went back over to Best Buy with my receipt. They gave me no problem. Promptly refunded the $166.49 difference (which included the sales tax difference also).
The refund mostly covered the price of the new monitor I had to buy that day also.