I usually open them and test them to make sure the disc works and isn't scratched. It's very rare for there to be a problem but you never know. It's better to open it and make sure it works then to open it in a few months and find out its too scratched to work or its a bad disc and you're out of...
I've bought several games from them in the last few years for X360. Sometimes the cd's looked scratched up a bit, but i've never once had a problem actually playing them. They also gaurantee them to work, so if you do get a dud then they'll send you another (never had to do that myself). Either...
Discover Card is great for cash back (1% on everything, 5% on different things throughout the year). I've built up a few hundred in cash back in the last few years (and I always pay off my card every month). Not EVERYWHERE accepts it (i rarely run into a place that doesn't though) , so I got a...