Its a really out of production model and i doubt they are active.
so you'll need a power amp to use it...
Although most sound people swear by it as a studio standard,
I'll say the new MSP series from Yamaha is freaking clear and
definitive enough.
I think the closest to you budget would be the MSP3.
You'll have to check with the showroom, It can be in
the 400 range brand new, depanding on the member
discount you can get. Hehe.
M-Audio Monitors, I havent heard them much, but from
what I read in the review from S.O.S, they didn't fair very
well.