I have a buyer who wants to buy my $100 App Store Gift Card for $70. Is that a good deal? I have never bought from iTunes, App Store, TV rentals, and have absolutely no use for it, but could I be getting more easily?
depends how badly you need the cash. Best deals I've ever seen that occur semi-regularly are through Best Buy and Walmart which offer a 20% discount (i.e. $100 card for $80). So you should ask to get $75 for it (my opinion).
sell it if you are not using it, I assume you got it for free ( a Gift ) you have no use for it , some money in your pocket better than a gift card sitting around