Internal Hard Drive Question

I'm looking at a 160GB Seagate Internal HD and I wanted to know if $79.99 is a good price and will it work on my PS3? The model # is ST9160821AS and it says its a Notebook Internal 2.5-Inch Momentus 5400.3 SATA 160-GB Hard Drive. Should I get this?

Also I'm going to need to back up my save files & downloaded games and I wanted to know what size flash drive should be good enough to back them up?

Ebay. If anyone knows of cheaper sites or even retail stores let me know because I new to this kind of stuff. I want to get a 160 GB or higher internal HD so any help will be much appreciated.

i got my wd 250 scorpio on ebay