How old is it, how much warranty remains? 89 hours is nothing. IIRC, this model had a pretty beefy loader, but a smaller pump than the 8560, so make sure you are ok with the loader speed. Larger cylinders with a smaller pump = slower cycle times. But that may not be an issue for you.
On a cash deal, that price is roughly $10k'ish under a new mPower85 cab with loader. So I'd say it is priced about right.