Some good points, but what do you expect, eBay reflects people in general, some are glad to clear out their garage and glad to help, others are after one thing and that is to make their wallet fatter.
Case in point with my latest eBay experience. I bought a Toaster Flyer. Been wanting one for ages. I have no idea about the Flyer and what it entails. I see the card comes with the Octapus SCSI cables. I think cool I should be good. Do some research and see there is a ribbon cable that attaches the Flyer to the Toaster. I ask the seller if it comes with this cable, she looks into it and tells me that the cable does not come off the toaster, she tried to revove it but it won't come off. We go back and forth, I find out from Matt H on here that the Flyer cable is attached to a board on the Toaster card and you have to swap it out. I tell her this, and offer to send her my BNC board for the cable. She says this has gotten out of hand and that the original auction did not include the cable and that's that. No deal sorry! I say it's a waste to sell the Toaster card with this cable if the buyer will not need it. She says "How do you know they might not need it?" Hello did I not buy this card that needs this cable from YOU? (help out your customer) She said I can just take my chances and just bid on it. I offer to buy her Toaster for an amount but she decides to list it on eBay instead, and get this! Mentions it has the "rare" Flyer cable with BNC board!!
So you see a descent helpful person would of worked with me and said, sure lets swap the BNC board so you can use this Flyer card you just bought from me! The other types, could care less. This is the reason people hate eBay.