DOn't know what your lower price range is...but
1. Go used whatever you get
2. I'll suggest these off the cuff
- EHX Bass Preacher - Lot of love in the bass world for this - that said a lot of bass players thing $200 is cheap compressor...
- TC Spectracomp - Was all there rage for a minute. Small profile, you'll want to edit on a computer.
- MXR Bass Compressor - Probably my favorite. Wanted one, but couldn't find one cheap when shopping.
What are you trying to do with this compressor?