The Wall Street Journal
There are dozens of websites promising cash for used tech, but not all of them are equal. Before you use any of them, check if people have complained to the Better Business Bureau, or written negative reviews on sites such as Trustpilot of ResellerRatings. Also, compare the quotes from multiple sites. Sometimes sites offer high, then pay low. If one website is offering an outlandishly high price, that may be a red flag.