I just got a bill from Ebay (not itemized, unless that info is hidden somewhere). They want 40 dollars from me - I sold about 350 dollars worth of gear in the last month. Their fees are over 10%? This plus the fees that Paypal gets? When I listed the items, Ebay told me the listings were free - I guess they hammer you harder on the back end now? Walk me through the basics, I'm confused.