I was shocked to learn what my old video cards would fetch online. eBay is still great. Especially now that one can use managed payments instead of evil Paypal which has banned many conservative and patriot causes and fundraisers. However, it's also worth selling them locally on Craigslist, Nextdoor and other local buy sell apps. Cash is untraceable and meeting people in public for a quick sale means no scams and no returns.