Usernames, domain names, and NFTs are often mentioned in the same breath because they're all a form of owning something scarce and digital. But they work differently enough that it's worth understanding before treating them as interchangeable.
None of these is strictly "better" — they're different kinds of scarce digital property with different risk profiles. A username's biggest edge is direct utility (you can actually build an audience on it); its biggest risk is that a platform, not a neutral registry, ultimately controls it.
Open the vault, pick a listed username, and DM the contact handle shown on the site to arrange payment — there's no cart/checkout, it's a direct conversation with the seller.
Crypto-only. See the Terms of Service for the full payment and delivery policy, including the sale-finality and 72-hour issue window.