It is hard to believe, however, most people outside of the Buffalo market don't even remember who Thurman was unfortunately. As great as he was, his name is never brought up when people think of the great RB's.
I've also got 6 Barry Sanders rookie cards and 6 Emmit Smith rookie cards......the Sanders are worth about $150/piece......the Smith are worth about $50/piece.
It's the same thing, even though Smith owns the all-time rushing title which to most people outside of Dallas means nothing, Sanders is arguably the best of all time, so his card sores, while Smith's is stagnant.
Very, very bizarre market indeed.