For higher margins, list individual parts on eBay , Facebook Marketplace , or Craigslist . You’ll handle the shipping and buyer communication, but you can set your own price.
1. Refurbishers and Component Resellers (Best for Working Parts) who buys scrap computer parts
Remove "heatsinks" (aluminum/copper) and "batteries" from motherboards. Most buyers will downgrade your price if these are still attached because they add "dirty" weight. For higher margins, list individual parts on eBay