I'm sick of the fees on Ebay it's become totally unprofitable for some items due to the massive fees. I use Facebook marketplace but that's more for local sales.
With crypto Ebay you could have near zero fees and have a decentralized marketplace model. I know there are things on TOR etc, but I just wouldn't trust it tbh. I can imagine Amazon buying this project one day for more than a billion $ as it would feel 'threatened' by the merely existence of this model and will end up incorporating it into their own business model.
If PayPal finally add the Cryptocurrency features in their platform buyers can now buy from merchants participants, and it will open merchants to Cryptocurrency holders and buyers, we don't need Ebay for this, it's good if we have out own Crypto Ebay and it could possibly start if merchants finally accept Crypto through Paypal.