Haha, if you sell it for cash it still finds it's way into Apples hands, thereforee giving their money right back to them. So, what you really need to do is just take the gift card and cut it into tiny pieces RIGHT THERE on the counter top in front of their employees after they hand it to you!
Or, then again, you could just send it my way.
I PROMISE not to spend it.
Go ahead hit my little "aim" guy thingy, do the right thing man...