It depends, on how the truck looks and runs. My truck has a salvage title and it runs pretty dang well.
Once they start getting older than a couple years it starts getting really easy to total them. I had a little hail damage on my truck that totaled it regardless of the fact that it had just been restored, and has low miles on it for an 86.
As for price it depends on the condition, and if it is someone i know or not. If it is in great mechanical shape, and i know teh guy i would be willing to pay with in a couple hundred bucks of the blue book price.
If i don't know the guy, or the history of the truck thats a different story. and it basicly comes down to i would have to see the truck.
Do you have some examples of a rebuilt salvage title truck.