The amount of posts on the forum buying or selling crypto domains is insane. However, you'll notice, rarely does someone sell a crypto-related name. Generally, the only sales you see are for main keywords under the .com extension. For example: crypto.com, nft.com, etc. Though, other extensions and particularly names with more than one "word" aren't worth very much. Given the rise of crypto domains (.x, .crypto, etc.) I don't see how these names will be worth anything in the future. You'll see your mainstream .com domain name that will allow you to access the new crypto TLDs. I mean, modern browsers are slowing baking this in - Brave and Opera have already done so.