About once a year, I get dinged with a negative feedback on eBay. Fate swooped in on my 34th birthday and dispensed me one just yesterday and I figured that I should post about how I resolved it. Math up front. On average I sell 15-20 items per week and though I leave feedback for all my buyers, I usually receive a 10% return feedback as a seller and am luckily still running at a 100% positive. I offer free shipping (which I bundle into the Buy it Now price) and 14 day returns on all my items which gets me into Top Rated/Powerseller status and that fly final value…