Most username scams follow the same basic pattern: someone takes payment and never delivers, or delivers an account that gets reclaimed shortly after. None of that is unique to this market — it's the same pattern as any online private-party transaction — but a few specific checks cut the risk a lot.
See also: specific red flags to watch for and what a normal handoff looks like.
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.