I’ve never had a problem with ebay. I order everything for my boat off there. Just ordered replacement valves for my head from there. When we redid the exterior and interior of the boat about 3 years ago everything came from ebay. From the plexiglass I used to replace old port lights with dead lights to the wallpaper for the Saloon. I ordered the boat material from someone who had got it from a shipyard to redo the salon seating. I recently replaced a faucet in the vberth sink with one off ebay. They’re very handy for what we need. I also order some of the strange herbs I take from ebay.
As an entrepreneur in High End Audio, I do use eBay for a few items/parts normally used in High End Audio from trusted sellers based in Taiwan & Hong Kong.
Items such as banana connectors (Rhodium plated), German made (Rhodium plated) fuses and other misc small items.
Typically, these are not available on Amazon.