Note: This article was excerpted from How to Sell Computers and Accessories on eBay, which is available from EntrepreneurPress.com. Computers and computer accessories are some of the best-selling and ...

In the last few years, there's been a noticeable trend — refurbished PCs sold for $500 or less on sites like eBay or Amazon that are, if not always outright branded as gaming PCs, always use the ...