I think you guys (especially in the rural areas) haven't experienced the large disparaging difference in value of money, parts, cars, etc. between West Coast/big city prices and the rest of the US.
Those pickers, storage unit bidders, auction houses, etc. don't just resell stuff to the wealthy, -it takes more dollars to do/buy many of the same things in other places like California or New York.
Disparaging enough to make a living out of it - many people make allot of extra money selling on the net.
I see the same pistol grip shifter kit for sale as 300 bucks or thirty bucks on ebay because there is such a huge rift in value -1980's/90's value versus now.
Remember how expensive it was in this hobby in early/mid 2005? -Some people want THAT money, others are out of that loop.