Is there anything that makes that $70k truck "perfect" for the local market? If so, maybe the discount should be $8 - $12; if not, the $12-$15k quoted by IdaD would be more in line.
Bought a new F250 last year; sticker was (IIRC) $68, got it for $60; but it was a real good fit for the market up here (4WD, heated seats, limited slip, etc, etc, etc) and with a few aftermarket things thrown in.
FWIW, I've been pretty happy with the F250 for the grand total of the 6000 miles so far.