$750 seems pretty steep to me for what it is...a typical traditional Taiwanese contractor saw with solid cast iron wings, nice Xacta II fence with wide rip capacity, mobile base, and a router table. The downside of this entire class of saw is the lack of true riving knife, outboard motor, dust collection, and connect rod arbor carriage.
It's a nice enough saw and appears in excellent condition, but the price suggests he's out of touch with the current market....general rule of thumb for used gear is roughly 50% of new...add a few percentage points for higher quality, condition, extras, etc. He may have paid $1k to $1100 for the saw, but he got warranty and dealer support in the deal, and isn't entitled to reimbursement for those perks IMO. I think $500-$600 is plenty for a used saw of this type in today's market. Much more than that would go a long way toward a pretty nice used cabinet saw (if you have 220v), or a new hybrid with riving knife, warranty, dealer support (return privileges), one piece arbor carriage, etc. I'd be investigating a new Grizzly G0715P, G0661, Craftsman 22116 (by Steel City/Orion), General International, or a used Griz 1023, PM66, or Delta Unisaw at that price point.