I sell stuff on Ebay, and you can buy it for almost nothing by getting free cryptocurrency from Coinbase, and using it to shop.
Here's an explainer post on my website: zombies of the information society: Buying Stuff for FREE On Here with Cryptocurrency.
The inventory on the website is always out of date, but my Ebay account is current. I only occasionally put stuff on the website that's not on Ebay.
See: https://www.ebay.com/str/declutter69.
I can also accept HBD and SBD, but that's not quite free. The point of the promo is to get things cheaper :)