Used values are really tough to peg, especially in AK where prices seem to run much higher than blue book. If you're looking at a used vehicle from a dealership, expect it to be much higher than blue book, private sale a bit higher.
And then there are some people that haven't a clue and ask way more than their vehicle is worth.
If you're looking at a $40k blue book and they are asking $5500 more and have a bunch of upgrades, might not be unreasonable. If KBB is $4500 and they are asking $10k, I wouldn't even bother calling them.
