Buy Sui (SUI) in United States with USD

SUI is listed on Coinbase, Binance, Kraken, OKX, Bybit, and Bitget, which covers most of the spot volume outside of Sui's own DEX surface. SUI/USDT is usually the deepest pair; SUI/USD is available on US-regulated venues. Recurring buys are supported on Coinbase and Kraken. Network fees on Sui are paid in SUI and typically amount to fractions of a cent per transaction, with storage rebates returning part of the gas when objects are deleted, which is unusual among layer-1s.

Custody is where Sui diverges from Ethereum and Solana muscle memory. Sui uses an object-based data model rather than an account-balance model. Your wallet shows a SUI balance, but under the hood that balance is a collection of distinct coin objects, each with its own object ID. Most wallets abstract this away, and for standard sending and receiving it does not matter. It matters when a dApp asks you to approve a specific object or when you try to split or merge coins manually. The three wallets most users hold SUI in are Sui Wallet (the official one from Mysten Labs), Suiet, and Martian. Ledger support for Sui is available through the Sui app.

On deposit side, exchanges list the network as Sui or SUI, and addresses are 32-byte hex prefixed with 0x, which can be visually confused with an Ethereum address. They are not interchangeable. Withdrawing SUI to an Ethereum address, or ETH to a Sui address, will not resolve and can end badly depending on the exchange's validation. Some exchanges also list wrapped SUI variants on other chains for bridge routes; those are not canonical SUI.

Before buying, confirm the network is Sui mainnet rather than Sui testnet (testnet tokens have shown up on obscure listings), check the address format matches, and hold a small SUI reserve for gas on any future contract interaction.