of being honest

couple of yrs back, I bought some CDs from CompUSA. the total was $42 and there was a mail-in-rebate for the same amount, hence making the purchase free (I always failed to understand this logic). usually it takes about 8-10 weeks to get back the money. In my case I didn't receive any for about 13 weeks.....so went to the shop and explained them the situation. surprisingly, they trusted me and gave the money immediately. they needn't have done so, but still gave me my money.
a day later I got the rebate check. since CompUSA was honest, I decided to give this check back to them, I didn't want the double discount. while I was on my way to the shop, I was day-dreaming that the shop manager would be impressed with my honesty, and would allow me to take any one item from the shop, and so on (yeah just like they show in the movies) :) unfortunately all I got was "Make sure you endorse that check correctly; thank you" :(

last week I got my mail-in-rebate check for a purchase. I received 2 checks instead of one. now I dunno what I should do :)

as an interim solution, I have deposited both the checks :)