From what I've heard recently, DAN is providing API so you can set it up on your own landing page. It includes buy it now button, the comission is 5%. I already stumbled across many custom landers with integrated DAN form. So could be a solution.
I cannot find any mention of this on DAN.com? Could you provide some examples?
P.S. May be other options? A am designing my own marketplace, so "buy now" buttons would be handy.
I haven't investigated how to access the API myself but Reza (DAN CEO) on the recent DNW podcast mentioned that many marketplaces already using it to embed the DAN form. So probably you could ask about it in chat on their site if you're at all interested in a solution like this