The Knitting Factory stuff is all high quality stuff, shop around as prices vary here and there... my biggest complaint is that they are essentially 12"s rather than what we would consider a full-length LPs, and still cost around $20. Over the years I found a few older releases here on Barter Town... sometimes you get lucky.
And in looking for Fela Kuti records, I got turned on to some awesome African music I never would have found otherwise.