How to Buy Unstable Coin (usduc.io)
Every exchange we track that lists USDUC, what the buy costs, and what it costs to take USDUC with you afterwards.
6 of the exchanges we track list USDUC, and 6 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 — $0.10 to buy $1,000 of USDUC and move it to your own wallet. Every exchange sends USDUC over Solana, so there is no network to get wrong. 1 of them has USDUC withdrawals paused right now — you can buy there, but you cannot take the coin with you until it reopens.
Networks USDUC runs on
Where to buy USDUC
All-in cost is the trading fee on a $1,000 market buy plus the cheapest fee that exchange charges to withdraw USDUC. 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 | $0.9809284 USDUC · Solana | $1.48 | 9,475 | Visit ↗ |
 KCEXPay with Card, 3rd-party | $0.000% taker | $0.0990528.68 USDUC · Solana | $0.10 | 908 | Visit ↗ |
 OurbitPay with Bank | $0.000% taker | $0.176151 USDUC · Solana | $0.18 | 1,980 | Visit ↗ |
 LBankPay with 3rd-party | $1.000.1% taker | $0.7083205.0861 USDUC · Solana | $1.71 | 1,890 | Visit ↗ |
 KrakenPay with Card, Bank, Apple/Google Pay | $8.000.01–0.8% taker | $0.3754108.69 USDUC · Solana | $8.38 | 697 | Visit ↗ |
 HibtPay with P2P | $2.000.2% taker | withdrawals paused | — | 1,721 | Visit ↗ |
Showing 1–6 of 6 exchanges listing USDUC
Buying USDUC step by step
- Pick a venue from the table. For a coin this size the choice is usually short — 6 exchanges list USDUC at all, and the table already shows what you will pay to leave as well as to buy.
- Fund the account. 6 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 USDUC on the exchange is free but custodial. Moving it to a wallet that supports it costs one withdrawal fee, from $0.09905 — send a small test amount first, and match the network on both sides.
How to buy USDUC — FAQ
Where can I buy Unstable Coin (usduc.io)?
On 6 exchanges we track: MEXC, KCEX, Ourbit, LBank, Kraken and 1 more. The table above has each one with its trading fee, the payment methods it takes and what it charges to withdraw USDUC.
What is the cheapest way to buy USDUC?
KCEX, at $0.10 to buy $1,000 of USDUC and withdraw it — $0.00 in trading fee plus $0.09905 to move it out over Solana. 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 USDUC with a credit card?
Indirectly, yes. 3 of the exchanges listing USDUC accept a card (MEXC, KCEX, Kraken), but the card almost always buys a major asset — USDT, USDC, BTC — which you then swap for USDUC 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 USDUC?
Yes, and it is worth checking before you choose where to buy. It is a flat amount of USDUC, set by each exchange per network, so it does not scale with the size of your purchase — the cheapest in the table is $0.09905 on KCEX. Our full USDUC withdrawal fee table compares every exchange and every network.
Is it safe to leave USDUC 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 $0.09905 for USDUC. For a trading balance, staying put is reasonable; for a long hold, most people move.
Exchange coverage for USDUC 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.