Buying a used truck. Buy local or travel?

I might be buying my 1st truck (used of course) in the next few months.

I live in Pennsylvania close to the New York and New Jersey borders.
There's TONS of used trucks, all in my price range, within a few hundred miles from my house.

My question is, how "sweet" would a deal have to be in order for me to justify flying out to another state and driving the truck back?

The way I see it, being that most trucks get 5mpg, and fuel costs around $5.00/gal, is should cost me about $1.00 per mile to get the truck home.

*Buying a truck 1,000 miles away, should cost me (about) $1,000.00 to get it home.*

Are interest rates different (lower?) in the western states??
Are western state trucks usually in better shape?

Thanks!

 

Okay, what used trucks/engines (at what HP rating) get better than 5mpg?
I know most trucks get better than 5mpg. I just used that # to keep things simple.

 

To be honest, that's exactly what I'm looking for. But I didn't want to get into a (truck brand debate) with anyone.

But the question still stands.

How sweet should the deal be to justify having to fly out to another state and drive the truck home?