Cheap mac hardware components?

Lt Major Burns

"Dicky" Charlteston-Burns
where can i find a website like dabs, in the uk, that sells lots of just mac-compatible hardware? i need a 250gb sata HDD, among other things. i've been stung with stuff i assume will work, but then doesn't.....
I am not sure about the UK shopping because I live inside the USA. However, maybe MacPicks could help. There are several pages at the site so maybe going to the separate page links at the bottom of the page could direct you to the right site. Good luck.