Not a part but you can use it to make parts. I have a functioning, slightly disassembled Creality CR10 3D printer I need to offload and I don't want to deal with fb marketplace.
Purchased new in 2020, it has a few hundred hours of printing time on it and was in fine working condition when disassembled. Disassembled is a bit of a dramatic reading as it's like half a dozen bolts to put it back together. I bought a new 3D printer last year and this one has been collecting dust ever since. It's not nearly as fast as the new generation of 3D printers but it does the job. I've used it to print with PLA and PETG. Allegedly it'll do ABS as well but I never tried.
Free for local pickup only in Southern Virginia between Martinsville and Danville. Don't want to ship and would likely cost more than the printer is worth to do so.