When selling on ebay, the listing fees (when not free), the final value fees and paypal fees add to about 14 to 15%. This is a bit of a hit on an item of large value. I have to say that paypal is a very good way for buyers to buy and sellers have to open themselves to the use of paypal (obligatory in UK) to be able to be in the sights of the multitudes ofbuyers.
Shops get charged about 4% (sometimes higher) for the acceptance of credit cards (with hardly any, or no security against bogus cards!) and also have overheads so I suppose selling on ebay gives you a chance to sell items with its own 'card' fees and overheads.
I do not like the fee system and it is definitely more economical for the power sellers and traders as opposed to private sellers, but having used it since for over ten years, it is still the most comprehensive selling platform for the like of us. There are others, and I have tried them, but hard as it is to admit, Fleabay has been the most successful...for me that is.........of course I am not including the great forum that we have here!