For frame of reference, I once listed my exceptional MAC1500 on eBay. Had some good documentation, a clean bill of health from Audio Classics, original packaging - the works. It was bid to $3,3xx but the buyer backed out. He later contacted me offering $2,900 + shipping because he calculated that was the amount I would've netted after eBay fees were deducted. This escalated into a dispute after which I told him it was no longer for sale. The principle is that I could have definitely gotten $2,900.
Within the last year A/C had one in B1 condition (about as close to mint as you can get) which they sold for $2,995.
These have become more valuable in recent years. If the condition as nice as you say it is and performing up to spec in all areas, I'd hold out for in the upper 2s.