CHow to Buy COSS
Every exchange we track that lists COSS, what the buy costs, and what it costs to take COSS with you afterwards.
2 of the exchanges we track list COSS, and 2 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. COSS has no market-cap listing, so nobody publishes a dollar price we could convert the withdrawal fee into — the cheapest exit we can see is 2,000 COSS on MEXC over COSS, charged in the coin itself. COSS moves over 2 networks (COSS, Ethereum (ERC20)) — pick the same one on the exchange withdrawal screen and in your wallet.
Networks COSS runs on
Where to buy COSS
COSS has no market-cap listing we can price it from, so the exit fee is shown in COSS itself rather than in dollars — the amount each exchange deducts when you withdraw. It is still the number that decides where to buy, because it is flat: the smaller your purchase, the more of it the fee eats. 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 | Coins listed | Buy |
|---|---|---|---|---|
 MEXCReferralPay with Card | $0.500–0.05% taker | 2,000 COSSCOSS | 9,475 | Visit ↗ |
 HitBTCCrypto deposit only | $2.500.1875–0.25% taker | — | 1,786 | Visit ↗ |
Showing 1–2 of 2 exchanges listing COSS
Buying COSS step by step
- Pick a venue from the table. For a coin this size the choice is usually short — 2 exchanges list COSS 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 COSS 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 COSS — FAQ
Where can I buy COSS?
On 2 exchanges we track: MEXC, HitBTC. The table above has each one with its trading fee, the payment methods it takes and what it charges to withdraw COSS.
What is the cheapest way to buy COSS?
We cannot put a dollar figure on it: COSS has no market-cap listing, so there is no price to convert its withdrawal fee into. What we can compare is the two halves separately — the lowest trading fee is $0.50 per $1,000 at MEXC, and the cheapest withdrawal is 2,000 COSS at MEXC over COSS. Work out which matters more from the size of your buy.
Can I buy COSS with a credit card?
Indirectly, yes. 1 of the exchanges listing COSS accepts a card (MEXC), but the card almost always buys a major asset — USDT, USDC, BTC — which you then swap for COSS 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 COSS?
Every exchange charges one, as a flat amount of COSS per network rather than a percentage. We do not have a priced figure for all of the venues listing COSS yet — the COSS withdrawal fee page has whatever each exchange publishes.
Is it safe to leave COSS 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 COSS?
COSS is issued on 2 networks and they are not interchangeable — COSS sent over COSS will not arrive at an address on Ethereum (ERC20). COSS 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.
A note on this page: COSS is a ticker the exchanges below list and settle, but it has no CoinMarketCap listing, so there is no price, market cap or rank to show and no coin page for it elsewhere on this site. Tickers are not unique across exchanges either — confirm on the exchange itself that its COSS is the asset you mean, and check the contract address before you send anything.
Exchange coverage for COSS 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. 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.