There can be no question that your geographical location has a heavy influence on price.
In areas where such trucks are generally rotted away from heavy road salt use or weather conditions, demand will far outweigh the supply, which drives the price higher.
In rural areas, or in 'high country' where limited road salt usage and favorable weather conditions keep the old trucks in pretty good shape, the supply generally outweighs the demand, and as a result, the prices are lower.
That's why I like using eBay as a general guideline for what something is actually 'worth'.. since it will show what similar vehicles have sold for nationwide in the last 30 days.
Now that's not to say if you lived in a high demand area with low supply, you couldn't hang a 'for sale' sign in the window and eventually sell it for more.. but instead should be used as a general guideline.
And remember.. there is a usually a HUGE difference between 'book' value, the sellers asking price, and what people are actually paying.
I mean, I could list a truck for sale in one of the Auto Trader mags and ask $30G's.. somebody else sees my ad and they think, "Hey! I outta sell my truck for $30G's, too!"
Next thing you know there are a dozen screwballs with similar trucks asking $30G's.. but none of 'em will fetch that kind of money.
'Book' value for the Suburban I just sold in 'good' condition as a 'private party' sale was something like $3800.. and that didn't take into account a recently replaced tranny, new windshield, and four new tires.. but I was lucky to get $2,000 for it.
Demand for many things is seasonal.. and depends on many factors.
