It’s too niche and would probably be full of scammers.

there is a crypto ebay on onion

very reliable and safe with escrow

pay monero for privacy

you can buy anything you want

I’m shocked how simple and quick Lighting payments are. Now that I see them in action I don’t understand why more sites don’t offer them. All that I see that would be useful but not mentioned is an API to convert fiat to sats in the moment.