Online retail giant Amazon announced yesterday that they will be offering a hefty discount on new video games for members of their Amazon Prime service. Slicing 20% off the top of any preorder or game that has seen a release within the last two weeks is sure to draw some gamers that have been on the fence about Amazon Prime. Pair that with the release date guarantee the service offers and they make a reasonable case for signing up. This is, however, not the first company to offer a similar discount. Best Buy has their Gamer Club Unlocked service, which will also get you that hot 20% discount, but which one offers the better value is certainly up for debate. Let’s take a second and compare some of the specifics of each service.