OHow to Buy Onix (ONX)
Every exchange we track that lists ONX, what the buy costs, and what it costs to take ONX with you afterwards.
4 of the exchanges we track list ONX, and 4 of those accept fiat, so you can buy it without holding crypto first. The cheapest place to place the order is MEXC at $0.50 on a $1,000 market buy. ONX moves over 3 networks (Ethereum (ERC20), Solana, X Layer) — pick the same one on the exchange withdrawal screen and in your wallet. 2 of them have ONX withdrawals paused right now — you can buy there, but you cannot take the coin with you until it reopens.
Networks ONX runs on
Where to buy ONX
All-in cost is the trading fee on a $1,000 market buy plus the cheapest fee that exchange charges to withdraw ONX. 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 |
|---|---|---|---|---|---|
 MEXCReferralPay with Card | $0.500–0.05% taker | FreeEthereum (ERC20) | — | 9,475 | Visit ↗ |
 OKXReferralPay with Card | $1.000.1% taker | 0.0003900 ONXX Layer | — | 411 | Visit ↗ |
 BinanceReferralPay with Card, Bank, Apple/Google Pay | $1.000.1% taker | withdrawals paused | — | 866 | Visit ↗ |
 HTXPay with Bank, P2P | $2.000.2% taker | withdrawals paused | — | 1,159 | Visit ↗ |
Showing 1–4 of 4 exchanges listing ONX
Buying ONX step by step
- Pick a venue from the table. For a coin this size the choice is usually short — 4 exchanges list ONX at all, and the table already shows what you will pay to leave as well as to buy.
- Fund the account. 4 of those exchanges take fiat, 3 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 ONX 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 ONX — FAQ
Where can I buy Onix (ONX)?
On 4 exchanges we track: MEXC, OKX, Binance, HTX. The table above has each one with its trading fee, the payment methods it takes and what it charges to withdraw ONX.
What is the cheapest way to buy ONX?
We cannot rank the exchanges on cost for ONX 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 ONX with a credit card?
Indirectly, yes. 3 of the exchanges listing ONX accept a card (MEXC, OKX, Binance), but the card almost always buys a major asset — USDT, USDC, BTC — which you then swap for ONX 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 ONX?
Every exchange charges one, as a flat amount of ONX per network rather than a percentage. We do not have a priced figure for all of the venues listing ONX yet — the ONX withdrawal fee page has whatever each exchange publishes.
Is it safe to leave ONX 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.
Which network should I use for ONX?
ONX is issued on 3 networks and they are not interchangeable — ONX sent over Ethereum (ERC20) will not arrive at an address on Solana. Ethereum (ERC20) is the one most exchanges use (1 of them). Withdrawal fees differ per network too, sometimes by an order of magnitude, so the cheapest network is worth checking as well as the cheapest exchange.
Exchange coverage for ONX 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.