Contrary to logic, stuff like big tires and a lift often *reduce* the selling cost, as it means the vehicle has been modified and you have more maintenance and more work ahead of you.
That looks like an ex-military Blazer, which are even more stripped than the civvys (you also said alternatorS and batterIES plural, which indicates the M1009.)
As noted, the axles in the M1009's were originally 3.08:1, so with 35"s you'd get fantastic fuel economy but would have NO power and would take an hour to get up to highway speed. Hopefully they were regeared to something like 4.56:1.
Also note that the rear axle has a Gov-loc, famous for failure, particularly with large tires and a heavy right foot.
CUCV pricing depends largely on condition. I sold mine, basically rust-free, lots of new parts, solid runner, rebuilt tranny, etc etc for four grand. That was at the beginning of the year, before diesel jumped in price and before the economy really went down the toilet.
If this one has any rust or dents or needs any work, I wouldn't go above three grand and that's IF it has 4.56:1's and proper steering correction, etc.
Properly maintained, the 6.2 is a decent motor -- a Cummins it isn't, but for a light duty rig like a Blazer (as opposed to a 1-ton tow rig) they're okay.
-- A