Good price to be sure. That all assumes he is honest and the 2 projects weren't the White Mountain National Forest.
One other thing, For the past few years around this time (Christmas/holiday sales) the 734 has been on sale for around $350. Clearly it isn't a 2 speed unit like the 735. They both are 3 blade units. It is built a bit different. It is worth considering. A new unit compared to a used one.
I would want the 735 to have an outfeed and infeed table.
From a price stand point, the 735 is fair price.
Let us know what you decide.