EGM says that that deal cost $470 right now so you save $11 You're not taking into account the extra year warranty.
Option #1- 4GB Xbox 360 + Kinect: $299
- 2 years of Xbox Live Gold: $120
- Extended warranty (Xbox 360): $25
- Extended warranty (Kinect): $25
- Total: $470
Option #2- 4GB Xbox 360 + Kinect: $99
- Two years of $15 monthly fees: $360
- Total: $459
But think of it this way, you spend $300-400 on the system and how many games are you going to buy day one? One or two? So now you walk into the store and only have to put down $99, you can now afford more games up front since your cost is spread out over time.
I think that's going to be the main benefit people will see. At least that's how I'd see it. I already have an Xbox and 250gb hard drive so obviously this doesn't appeal to me, but maybe I'll pay the $99 for my girlfriend and she'll pay the monthly fee, or heck maybe I'll do both and then we can game together.
I've been trying to convince her to get one so we can spend time doing stuff together other than Skype, so maybe this will help LOL