Hogwash.  I have attempted many times to sell stuff on
ebay.  Even at
 the suggestion of people I would have thought were potential buyers.
 To date, I have sold nothing.  I once went back to the list that
 suggested I use ebay to report my failure only to be greeted with,
 "Well, what did you expect.  You are not an established seller."
 I have tried non-computer stuff, too.  I offered a Chilton Automotive
 Repair Manual for a classic car.  I listed the cost of a USPS "If it
 fits, It ships" padded envelope for postage.  Ebay denied my listing
 saying I was asking to much for shipping.  At that point I quit trying
 to sell anything on ebay. 
Price rules first. I NEVER look at an eBay seller's rep or newness before
buying/bidding. If what you offer is a good price/value then that is all I care about it.
If you end up being a shitty seller, not packing right, or whatever, then there is eBay
Money Back Guarantee. Your trash is coming right back to you at your expense. I may be
disappointed and lose some time but I am not losing any money on the deal so I take the
risk. Sometimes it pays off sometimes it doesn't.
-Ali