I can't say if your price is good or bad but in 2007 I paid $5,950, before tax, for my BH75 with an 18" bucket, so it is consistent anyway with what I paid.
I love my BH, it has worked doggedly for me, I have about 70 hours just on my BH alone with no issues to report. Most of those hours are stump pulling with the occasional rock. About 5 of those hours came from rigging my 800 pound gun safe down into my basement alone.
I offer that I would put a thumb on it ASAP, it really increases the verstaility of the BH, makes fooling around with rocks and tree stumps much easier. I frequently pull small trees out, up to 2" to 2.5", by the stump without even a scoop at the base.