Yes it is a good deal and a few of us know what is the suppose warranty at Costco. While I got a (free) membership at Costco last year, I have yet purchased electronic from that business.
The problem is that most of us forget how expensive computer crap was just a few years ago. Memory goes up a few $$$ and it big new. I still recall paying over $300 for two 16 MB of FP memory for my PS/1. I was overjoyed, since the price had dropped by over a $100, since I first went shopping on the internet way back then.