Ok thanks a ton guys. I should've figured that out since my first amp which was a Behringer broke.
His original asking price was $539, and I asked if he'd take $500 flat, no tax. He said yes, and than I talked to him about the specs, found out it comes with a 15" speaker rather than 2 x 10, and no pedal included (effects are pedal switchable).
Do you think I should ask if he'll take $450 now? or if he'll take $500 and throw in a gig bag? (I'm using a sleeping bag for my bass right now). Or is it bad practice to ask for a better price and than ask again?
Also, I found this
http://www.axemusic.com/product.asp?...20890&PT_ID=69 Peavey 600 watt with crunch, also for $500 with free shipping, and this one would be new, so there would be a potential warranty.
So a 400 watt Yorkville with tube preamps, or a 600 watt Peavey with "Crunch switch adds tube-like crunch effect". Do the tube pre-amps do enough for me to sacrifice 200 watts and take used over new?
Or I could go with this
http://www.axemusic.com/product.asp?...24102&PT_ID=69 Fender Rumble 350 watt, has overdrive/distortion, and seems to be tailored to the kind of tone I want; although I prefer the sound of 1 x 15s to 2 x 10s, from my experience. The other main factor in my decision wasa that the yorkville goes has a frequency response of 20hz - 20khz, +/-3db; I've only seen that in headphones. I'm in love with ultra low-frequency; I don't know if it would make a difference to my bass tone, but my keyboard can go infinitely low if the speaker can handle it.