I just picked up a Hartke A70 combo amp through craigslist - barely used, mint condition, for $200. I know it's nothing amazing (especially compared to all of the big rigs that a lot you guys have), but it was just the sort of small practice amp that I was looking for. I've hated having to haul my amp (a Peavey Basic 40) back and forth to our jam sessions every couple of weeks, so now I can leave the Peavey in the practice space at the guitarist's house and still have an amp for home.
Thats all that matters dude. As long as you are playing and you are happy. I used to play alot more back in the day with a Crate combo and a cheap bass than I do now. I have 6 basses and a few amps and cabs and it really means nothing if Im not using them.