A free mint NFT has a mint price of zero, but you still pay network gas. What that costs, why you need a funded wallet, and the red flags to avoid.
By Proud Lion Studios · 14 October 2026 · 7 min read
A free mint NFT is one where the creator sets the mint price to zero, so the only thing you pay is the network fee, called gas, for the mint transaction. Free means no price on the item, not no cost at all: your wallet still needs a small amount of the chain's native token to send that transaction.
This guide explains what you actually pay, why a free drop still needs a funded wallet, which wallet prompts are normal and which are not, and how to tell a genuine free mint from a trap. We use our own drop, Ethernal Cubs, as the worked example, with gas figures read from the chain on 14 October 2026.
Minting is the moment a new NFT is created on a blockchain and recorded to your wallet address. Every mint is a transaction, and every transaction on an Ethereum style network pays gas to the validators or sequencer that process it.
A drop has two separate costs, and people mix them up:
So a free mint removes the first cost entirely and leaves only the second. How big that second cost is depends almost completely on which chain the drop runs on.
Gas cost is gas used multiplied by gas price. A mint usually uses somewhere around 100,000 to 250,000 units of gas, depending on the contract. We use 150,000 as a typical figure. Your wallet shows the exact estimate for the real contract before you confirm anything.
On 14 October 2026 at 06:07 UTC we asked the official Robinhood Chain RPC for its gas price. It answered 20,149,536 wei, which is 0.0201 gwei, at block 88,139,747, and confirmed chain ID 4663. CoinGecko priced ETH at $2,502.90 at the same minute. Here is what that means:
So a free mint on Robinhood Chain that morning cost less than one cent. That reading sat right on the chain's 0.02 gwei floor, which our full breakdown of Robinhood Chain gas fees explains, along with how the fee is split between the chain and Ethereum.
Gas moves, so treat these as a snapshot. On busy chains a popular free mint can push the price up for everyone trying to mint in the same minutes. On Robinhood Chain, the official documentation describes first come, first served ordering, and when we asked the RPC for a suggested priority fee it answered zero. Paying a tip does not move you up the queue there, so the default fee your wallet offers is the right one.
Because the network will not process a transaction that cannot pay its own gas. A wallet with zero ETH on the right chain cannot mint, even when the mint price is zero. This is the single most common reason people miss a free drop: they have the spot, the right wallet and the right time, and an empty balance on the right network.
For Robinhood Chain, the easiest route for most people is the Swap button inside MetaMask, which can move ETH across networks in one step. On 14 October 2026 the MetaMask swaps guide listed a MetaMask fee of 0.875% on top of the quote and network fee, and confirmed that bridging between networks can be done through Swaps. For larger sums, the official Arbitrum bridge avoids the percentage fee. Our guide to bridging ETH to Robinhood Chain compares both routes.
A genuine mint is one transaction to the drop contract. Your wallet shows the contract, the amount being sent (zero, or close to it, on a free mint) and the gas fee. You approve it, it lands, and the NFT appears at your address. That is the whole flow.
What a mint should never need is permission over things you already own. The prompt to watch for is an approval, especially one called setApprovalForAll. It gives another address the right to move every NFT you hold in a collection, with no limit, until you take it back. That is a normal thing to grant to a marketplace when you list for sale. It is not part of minting a new item, and it is the standard tool of fake free mint pages.
If you have already approved something you should not have, revoke it. The MetaMask article on how to revoke token approvals makes two points worth knowing: disconnecting a site from your wallet does not revoke its approvals, and each revoke is its own on-chain transaction that needs gas. One more reason to keep a little ETH in the wallet.
Most bad free mints steal through the page you were sent to, not the mint itself. The patterns repeat:
A simple habit removes most of the risk: start every mint from a link the project published on its own website, and read every wallet prompt before you confirm it.
Ethernal Cubs is a customizable NFT game on Robinhood Chain, an Ethereum Layer 2 built on Arbitrum. The mint is 3,333 Orbs, free, with gas the only cost. You mint a sealed Orb that later becomes your own Cub, built from swappable parts and shaped by the community around the game. Spots are earned on a whitelist board, and only whitelisted wallets can mint, through the official collection, Ethernal Cubs Orbs on OpenSea.
At the gas price we read this morning, one Orb mint would cost under one cent in ETH. A dollar or two of ETH on Robinhood Chain covers the mint and leaves room for a busy day and a revoke or two later. The mint itself is one transaction to the drop contract. It will never ask for an approval over anything you already own, and the team never DMs first.
If you are not sure how an allowlist stage decides who can mint, our explainer on what an OpenSea allowlist mint is walks through it.
The mint price is zero, but every mint still pays network gas. On Robinhood Chain on 14 October 2026 that came to under one cent for a typical mint. On busier networks the same free mint can cost far more in gas.
Your wallet has no ETH, or not enough, on the network the drop runs on. ETH on a different chain does not count. Move a small amount onto the right network and try again.
Connecting only shares your address. The risk is in what you sign afterwards. Use the official link, approve only the mint transaction, and refuse any approval over collections or tokens you already hold.
Ethernal Cubs is a free mint on Robinhood Chain, built by Proud Lion Studios. Earn your whitelist spot and read the latest at https://ethernalcubs.ai/.
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