Upload & Sell: Off
Just avoid those sellers that ask for you to pay the PayPal fees, insurance, etc.
OR just avoid those buyers who expect a free lunch.
Although big time retailers/wholesalers ship free on certain items, they rarely ship those items at full cost. There have been many discussions on FM about camera store 'free shipping' that might take over a week, even to go 100 miles. If a FMer shipped the same way, the buyer would be pissed. If a package got damaged because there was no insurance, or lost because there was no tracking, or no signature required if the product is over $500.... the buyer loses. Shipping 2nd Day Air, my preferred way, with insurance is costly, especially if it's coast to coast. I have factored in shipping fees on many occasions only to be burned by underestimating. Sometimes I factor partial PayPal fees, but it's usually embedded in the asking price. Some of the same buyers who complain about shipping, etc. offer 2/3 of the asking price with the expected free everything on top. It's a two-way rant.