I think he's just randomly pricing his stuff
This is absolutely not true. They know exactly what stuff is worth, probably better than any of us.
I have been inside the facility (about 5 minutes from our office) and it is a warehouse which moves tons (literally) of obsolete computer gear. When I walked in, the first thing inside the door was 2 large pallets of keyboards stacked waist-high and wrapped in clear plastic, bound for Pakistan, sold by weight. I would bet a large amount of money that there were no buckling springs in there. 98% of what they get in is obsolete junk, and it goes straight to the 3rd world.
They have not listed a Model F in a couple of years. Back about then, they had 3 horribly trashed F-122s in a filthy cardboard box which they had listed at $85 but took $65 cash when I offered to carry it out the front door with no shipping or ebay fees. I am pretty sure that the employees pull out anything that is actually good or valuable and keep it or sell it themselves.
Anything that you see posted on ebay is something that they pulled out of the waste stream because they perceived it as having some value above salvage, but not nice enough to carry home. Remember that "salvage" means what is salvaged, not garbage to be discarded, as the term is often used.
Low-priced items that do not sell get cycled back into the dreck, decent items stay up until they sell. They will probably entertain an offer of 2/3 to 90% of the listing price on something that has not sold in a week or 2.
