I find the hunt to be entertaining in itself and hate paying big for games/things I honestly don't know if I'll like. Maybe this isn't news but I've never heard anyone talking about it and reading forums makes it clear that there are a ton of people who worry about money so hopefully it helps people on a tighter budget. This is the best legal way i've found to catch up on that backlog of titles that I wasn't sure I wanted to play.
Using amazon you can play games for a mere couple dollars quite often. For example recently I've played LA Noire and Crysis 2, it cost me less than $2 total out of my pocket for each to get Like New copies not jizzed on rental crap. Using amazon also means I didn't have to leave my house to get it other than driving by a UPS dropbox on my way to work. Now this involves trade-ins so either you found you really like the game and it was worth what you paid or you trade it in after you finish/hate it and are out a couple bucks, easily worth a test drive for that price. Amazon often changes their trade in prices so keep checking on games you want. With prime you can also lock in a trade in price when you order the game because you know it will get there quick with prime shipping and it will be good quality. You can also extend the game time by cancelling and resubmitting the trade if you must, the trade in price can change but you know before hand.
So for examples the games i've gotten within the last few weeks.... and remember no commission or shipping costs:
LA Noire - paid $11 on prime for a like new used copy got a trade in price of $9.40, wanted another few days to play it and saw the trade in price was now 9.50 so i cancelled my other trade in and got 4 more days to play it and a better price. between seeing 9.40 and 9.50 prices it also went down to $7 so you need to check.
Crysis 2 - paid 8.84 got a trade in of 7.15
Darksiders 2 - paid 33.95 got a trade in of 30.95
Dead Rising 2: Off The Record - paid 15.50 got a trade in of 12.15
maybe it's because I'm a money manager by profession, who knows. But paying that kind of money, getting things when you want and quickly is awesome. hopefully some of you duders can get some sweet games for near nothing without pirating them. if you already do this, cool. if you think it's a shit idea (and want to be a dick about it) well I am truly sorry that you suck.