XHow to Buy x402
Every exchange we track that lists X402, what the buy costs, and what it costs to take X402 with you afterwards.
2 of the exchanges we track list X402, and 2 of those accept fiat, so you can buy it without holding crypto first. The cheapest place to place the order is Ourbit at $0.00 on a $1,000 market buy. Every exchange sends X402 over Ethereum (ERC20), so there is no network to get wrong. 1 of them has X402 withdrawals paused right now — you can buy there, but you cannot take the coin with you until it reopens.
Networks X402 runs on
Where to buy X402
All-in cost is the trading fee on a $1,000 market buy plus the cheapest fee that exchange charges to withdraw X402. It is the number the exchange’s own “how to buy” page never shows you, and it reorders the table more often than not. The coins column is how many assets each exchange lists in total, from our own sync — not the figure CoinMarketCap prints.
| Exchange | Buy fee on $1,000 | Move it out | All-in cost | Coins listed | Buy |
|---|---|---|---|---|---|
 OurbitPay with Bank | $0.000% taker | 4,000,000,000,000 X402Ethereum (ERC20) | — | 1,980 | Visit ↗ |
 BitMartPay with Card, P2P, 3rd-party | $1.000.1% taker | withdrawals paused | — | 3,695 | Visit ↗ |
Showing 1–2 of 2 exchanges listing X402
Buying X402 step by step
- Pick a venue from the table. For a coin this size the choice is usually short — 2 exchanges list X402 at all, and the table already shows what you will pay to leave as well as to buy.
- Fund the account. 2 of those exchanges take fiat, 1 of them by card. Card is fastest and dearest; a bank transfer costs a fraction of it. Depositing a stablecoin you already hold is free on almost every exchange here.
- Place the order. A market order pays the taker fee in the table; a limit order that rests on the book pays the lower maker fee. On a thinly traded coin the spread costs more than either, so a limit order is worth the wait.
- Decide whether to move it. Leaving X402 on the exchange is free but custodial. Moving it to a wallet that supports it costs one withdrawal fee — send a small test amount first, and match the network on both sides.
How to buy X402 — FAQ
Where can I buy x402?
On 2 exchanges we track: Ourbit, BitMart. The table above has each one with its trading fee, the payment methods it takes and what it charges to withdraw X402.
What is the cheapest way to buy X402?
We cannot rank the exchanges on cost for X402 yet: the venues that list it have not published enough of their fee schedule for a like-for-like comparison. The withdrawal fees in the table are still exact.
Can I buy X402 with a credit card?
Indirectly, yes. 1 of the exchanges listing X402 accepts a card (BitMart), but the card almost always buys a major asset — USDT, USDC, BTC — which you then swap for X402 on the same exchange. That means two fees: the card charge, then the trading fee in the table.
Do I have to pay a fee to withdraw X402?
Every exchange charges one, as a flat amount of X402 per network rather than a percentage. We do not have a priced figure for all of the venues listing X402 yet — the X402 withdrawal fee page has whatever each exchange publishes.
Is it safe to leave X402 on the exchange?
It is a custody choice, not a safety switch. While the coin sits there the exchange holds the keys: convenient, recoverable if you lose your password, and dependent on the exchange staying solvent and keeping withdrawals open. Moving it to a wallet you control removes that dependency and costs one withdrawal fee. For a trading balance, staying put is reasonable; for a long hold, most people move.
Exchange coverage for X402 comes from each exchange’s own deposit and withdrawal endpoints (last sync 2026-08-29 00:53 UTC); trading fees are the published base tier, no volume discount applied (verified 2026-08-28). Exchanges we have a referral arrangement with appear first and are tagged as such — it changes no number in any row. Nothing here is investment advice; see our methodology.