They are worth about 5 bucks per tire, 20 bucks each for freight.
I'll take 'em.
Seriously, if you decide what you want for them, I'm looking. I have seen them go for anywhere from 300 for the set, up to a little over 500, with local pick up. Freight is pretty high for rim/tire sets.
Go ahead and post the actual tire size, and what they are (I would assume Goodyear SR-A) and some photos because everyone will want to see a picture.