Being an '07, I'd look at the Kelly Blue Book, NADA and
edmunds Used Car prices (compare or average the trade in, private party and retail prices) and also run an invoice price for an '08 with the same equipment. Problem with the '07 is that you'll still be driving off with a lot more depreciation, and you're only gaining 1 year in model upgrade. '08 has more options available, trim levels, etc., or wait 'til '09 comes out in Aug/Sep. Just my thoughts. I'm looking to get out of my '05 D-cab, but #'s just weren't working in my favor, so I'm holding out.