You're probably already familiar with eBay, the ultimate online flea market and one of the best sources for used and new computer parts. Finding nearly any PC hardware made within the last two ...

Here are some of the main things to look out for when buying used computer parts, including which ones to avoid entirely. Make sure you're getting the right product. AnnaStills/Shutterstock.

If you're a build-it-yourself kind of person, you can buy used computer parts online—but even more than most used items, you'll want to be careful.

In fact, there's a booming market for used computer parts-if one knows where to look. Since 2014 SellGPU has helped its customers sell computer, gaming, and server components instantly for cash.