How to Buy Opinion (OPN)
Every exchange we track that lists OPN, what the buy costs, and what it costs to take OPN with you afterwards.
27 of the exchanges we track list OPN, and 25 of those accept fiat, so you can buy it without holding crypto first. The cheapest place to place the order is KCEX at $0.00 on a $1,000 market buy. It is also the cheapest once the withdrawal fee is added — $0.00 to buy $1,000 of OPN and move it to your own wallet. OPN moves over 2 networks (BNB Smart Chain (BEP20), Ethereum (ERC20)) — pick the same one on the exchange withdrawal screen and in your wallet. 4 of them have OPN withdrawals paused right now — you can buy there, but you cannot take the coin with you until it reopens.
Networks OPN runs on
Where to buy OPN
All-in cost is the trading fee on a $1,000 market buy plus the cheapest fee that exchange charges to withdraw OPN. 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 | $0.056941 OPN · BNB Smart Chain (BEP20) | $0.56 | 9,475 | Visit ↗ |
 BinanceReferralPay with Card, Bank, Apple/Google Pay | $1.000.1% taker | $0.0056940.1000 OPN · BNB Smart Chain (BEP20) | $1.01 | 866 | Visit ↗ |
 BitgetReferralPay with Card, 3rd-party | $1.000.1% taker | $0.16242.8517 OPN · BNB Smart Chain (BEP20) | $1.16 | 2,516 | Visit ↗ |
 GateReferralPay with Card | $1.000.1% taker | $0.53989.48 OPN · BNB Smart Chain (BEP20) | $1.54 | 2,059 | Visit ↗ |
 KCEXPay with Card, 3rd-party | $0.000% taker | $0.0011390.02000 OPN · Ethereum (ERC20) | $0.00 | 908 | Visit ↗ |
 OurbitPay with Bank | $0.000% taker | $0.022780.4000 OPN · BNB Smart Chain (BEP20) | $0.02 | 1,980 | Visit ↗ |
 BitMartPay with Card, P2P, 3rd-party | $1.000.1% taker | FreeBNB Smart Chain (BEP20) | $1.00 | 3,695 | Visit ↗ |
 CoinWPay with Card, Apple/Google Pay, 3rd-party | $1.000.1% taker | FreeBNB Smart Chain (BEP20) | $1.00 | 1,218 | Visit ↗ |
 BitunixPay with P2P | $1.000.1% taker | $0.11392 OPN · BNB Smart Chain (BEP20) | $1.11 | 993 | Visit ↗ |
 Biconomy.comPay with Card, P2P, 3rd-party | $1.000.1% taker | $0.12532.2 OPN · BNB Smart Chain (BEP20) | $1.13 | 990 | Visit ↗ |
 WhiteBITPay with Card | $1.000.1% taker | $0.18223.2 OPN · BNB Smart Chain (BEP20) | $1.18 | 423 | Visit ↗ |
 LBankPay with 3rd-party | $1.000.1% taker | $0.21493.7735 OPN · BNB Smart Chain (BEP20) | $1.21 | 1,890 | Visit ↗ |
 MGBXPay with Bank | $1.000.1% taker | $0.22784 OPN · BNB Smart Chain (BEP20) | $1.23 | 364 | Visit ↗ |
 OrangeXPay with Card, Bank, Apple/Google Pay | $1.000.1% taker | $0.761513.3742 OPN · BNB Smart Chain (BEP20) | $1.76 | 599 | Visit ↗ |
 CoinExPay with P2P, 3rd-party | $2.000.2% taker | $0.0096800.1700 OPN · BNB Smart Chain (BEP20) | $2.01 | 1,018 | Visit ↗ |
 HTXPay with Bank, P2P | $2.000.2% taker | $0.39907.0074 OPN · BNB Smart Chain (BEP20) | $2.40 | 1,159 | Visit ↗ |
 XT.COMPay with Card, Bank, P2P | $2.000.2% taker | $0.52959.3 OPN · BNB Smart Chain (BEP20) | $2.53 | 1,110 | Visit ↗ |
 HibtPay with P2P | $2.000.2% taker | $0.569410 OPN · Ethereum (ERC20) | $2.57 | 1,721 | Visit ↗ |
 BitruePay with Card | $2.800.098–0.28% taker | $0.11962.1 OPN · BNB Smart Chain (BEP20) | $2.92 | 1,784 | Visit ↗ |
 HotcoinPay with 3rd-party | $2.000.2% taker | $1.0819 OPN · BNB Smart Chain (BEP20) | $3.08 | 643 | Visit ↗ |
 KrakenPay with Card, Bank, Apple/Google Pay | $8.000.01–0.8% taker | $0.21353.75 OPN · BNB Smart Chain (BEP20) | $8.21 | 697 | Visit ↗ |
 ToobitPay with Card, Apple/Google Pay, 3rd-party | $1.000.1% taker | $11.43200.6598 OPN · Ethereum (ERC20) | $12.43 | 581 | Visit ↗ |
 HitBTCCrypto deposit only | $2.500.1875–0.25% taker | $10.62186.6 OPN · BNB Smart Chain (BEP20) | $13.12 | 1,786 | Visit ↗ |
 WEEXPay with Card, P2P | $1.000.1% taker | withdrawals paused | — | 594 | Visit ↗ |
 WHXEXCrypto deposit only | $1.500.15% taker | withdrawals paused | — | 235 | Visit ↗ |
 idax exchangePay with Bank, 3rd-party | $2.000.2% taker | withdrawals paused | — | 378 | Visit ↗ |
 KoinbayCrypto deposit only | $6.000.6% taker | withdrawals paused | — | 253 | Visit ↗ |
Showing 1–27 of 27 exchanges listing OPN
Buying OPN step by step
- Pick a venue from the table. For a coin this size the choice is usually short — 27 exchanges list OPN at all, and the table already shows what you will pay to leave as well as to buy.
- Fund the account. 25 of those exchanges take fiat, 15 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 OPN on the exchange is free but custodial. Moving it to a wallet that supports it costs one withdrawal fee, from $0.001139 — send a small test amount first, and match the network on both sides.
How to buy OPN — FAQ
Where can I buy Opinion (OPN)?
On 27 exchanges we track: MEXC, Binance, Bitget, Gate, KCEX and 22 more. The table above has each one with its trading fee, the payment methods it takes and what it charges to withdraw OPN.
What is the cheapest way to buy OPN?
KCEX, at $0.00 to buy $1,000 of OPN and withdraw it — $0.00 in trading fee plus $0.001139 to move it out over Ethereum (ERC20). If you are leaving the coin on the exchange, only the first half applies and a different venue may win. Paying by card adds the card processor's charge on top of both, typically 1.8–4%.
Can I buy OPN with a credit card?
Indirectly, yes. 15 of the exchanges listing OPN accept a card, but the card almost always buys a major asset — USDT, USDC, BTC — which you then swap for OPN 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 OPN?
Yes, and it is worth checking before you choose where to buy. It is a flat amount of OPN, set by each exchange per network, so it does not scale with the size of your purchase — the cheapest in the table is $0.001139 on KCEX. Our full OPN withdrawal fee table compares every exchange and every network.
Is it safe to leave OPN 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 — from $0.001139 for OPN. For a trading balance, staying put is reasonable; for a long hold, most people move.
Which network should I use for OPN?
OPN is issued on 2 networks and they are not interchangeable — OPN sent over BNB Smart Chain (BEP20) will not arrive at an address on Ethereum (ERC20). BNB Smart Chain (BEP20) is the one most exchanges use (22 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 OPN 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.