What I found in selling used parts on Ebay was a few things will bring great money and many items wouldn't sell at any price.
We started selling parts from the Store we bought a few years back.
New old stock stuff sold pretty well from all brands as long as we knew what saw it fit to put in the title line.
Stihl and Husqvarna were the kings of the castle new or used, but many models were duds like the 09, 10, 11, 12, 15, 020AV, 031, 032, 030, 041, 040, 050.
Lots of guys wanted parts for partner and pioneer saws at about 1/3 of our asking price
Coils, nice (perfect) plastics or mag covers, carburetors, cylinders and crankshafts well pretty well from most models.
I once bought a Skil and took it down to bare pieces and listed them all.
paid 20 for rough running saw at pawn shop, varnish smelling gas
Sold crank for 30, coil for 35, carburetor for 35, cylinder and piston for 45, eventually recycled everything else. so probably quadrupled my money after fees shipping etc.
Our experience selling used parts on Ebay led us to today where we refuse to sell a used part
Dave