Amazon (AMZN) is the new eBay (EBAY): just as eBay merchants have long griped over rising...

|By:, SA News Editor

Amazon (AMZN) is the new eBay (EBAY): just as eBay merchants have long griped over rising Marketplaces/PayPal fees, Amazon's 3rd-party sellers have become agitated over a string of fee hikes - both for Amazon's cut on merchant sales, and for related services. 3rd-party sales now make up 39% of Amazon's unit sales, and have been lifting its gross margin. eBay could benefit from the backlash - one firm estimates it costs $2.72 to sell a $10 item on eBay vs. $3.92 on Amazon - but as eBay knows all too well, complaining and leaving are two different things.