odd goods like you might find in craiglist's for sale section. shared passwords or accounts for streaming websites. books. paintings. collectibles. there are often good deals on any dark net marketplace that pops up. All the way back to Silk Road 1.0.

cheaper than listing on ebay.

Without the ebay protections in place it should be cheaper or it would make little sense to use them.

Multisig escrow is the protection

Its just cheaper mate

Anything that is easy to steal, perhaps?

And everything else? You can use craigslist over TOR

All DNMs offer an expanded audience and borderless payment system that wont freeze your account