So they're just replacing your RAM? You're only paying for new RAM?
Nothing wrong with your RAM socket?
Gosh I wonder if my RAM is faulty, that would explain all the symptoms - blacking out etc, and the first time i got it to work was by pulling out the RAM and chucking it in the opposite slot, but I don't understand how now knocking it it the only way to get my computer to work. Oh well, I can only test it.
You should ask sager for my sake whether it was just a problem with your ram module and nothing to do with the RAM socket.
Although 175$US seems too expensive to be just for a new RAM module, you get 512MB DDR SODIMS on newegg for $88