My peer-reviewed advice .
I'll add to that and make things a bit easier:
contact Quinn, our forum sponsor, and he'll fix you up with something decent.
@Gandalfe if you have any better contact advice, please do post. If Quinn doesn't have something that fits your price range, I'd recommend trying
Kessler Music.
I'm being a bit lazy, offering the above as advice, but I remember, a couple years ago, that Quinn had literally hundreds of new student Selmer or Buffet clarinet kits he was selling really cheap, $150 or $250, IIRC. With warranty, also IIRC.
===========
Let me put a disclaimer on BSG!'s advice (and that's an excellent price for a Series 9): have your instructor look at before buying. Your instructor should know if clarinet X has any hidden damage that would make the horn unplayable. Boorsman, I just want you to have a good start in the world of clarinet playing!