If it sounds to good to be true then it probably is.

Did Ebay sound too good to be true to you before switching careers.?

Remember you are competing in a field were anyone can do it, with no experience, no qualifications needed.

Add in to the mix a whole lot of people just doing it because they enjoy it rather than they wont to mega rich business people.

Walk into a room with 50 people everyone of them is capable of competing with you for sales on on Ebay, I bet non of them is capable of competing with you for work as a graphic artist.

By the way sellers dont "deserve" anything for their efforts, its not a PAYE job, there is no right to profit. Profit needs to won, its not handed out for turning up for work, thats the challange of running a business.