25K is too much for the lot. Suppose you got 25000 items, you would have to sell each for a dollar to recoup the auction cost.
I estimate about a month of work to pack ( done correctly so you do not damage ), that's four guys cataloguing and packing. Then, it looks like about two semis worth the weight.
I suspect you are looking at an additional $16,000.00 to catalogue, tag, inventory and ship the lot. Then,,,,,, where do you put it all?
I think the best thing this guy could do is hire someone to place each item on ebay and liguidate as a dollar bid.
A person that knew how to place the adds and offer the right combinations, could probably turn this mountain of rust into a mound of gold.
Just my $0.02. $25,000 is too much for that pile of rust.
