These don't look fake. They look like common date circulated peace dollars. not something asians would have time or incentive to fake. what they're faking are the Carson City mint Morgans, all of which are key dates for collectors, a few other date/mints of Morgans. The only peace dollars they might fake are mint state 1921 peaces (of any mint) a MS 1928 or 1935 S. If you want to be sure, just ask him what most of the dates are. If he says 1922 or 1923 then I would be 99.9% certain they are real - no one is going to fake those when they could spend just as much effort making a 1892 S or 1893 S or 1890 CC.
A lot of sellers start their bidding low knowing that the market will dictate a pretty predictable closing price.