I was in sales over 20 years ago, made it into the top 10 in Australia in my first year in fact.  We were given targets to reach and when they were achieved we were rewarded with free gifts, not extra fees.  I am sure those high up in ebay are being rewarded for a good job well done - it doesn't look like the regular sellers are though.

We can only wish we were rewarded - it just doesn't happen like that on eBay.