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I am going to mint a collection of 10,000 NFTs. However, I've become very concerned over the gas costs associated with such an endeavor. I was wondering if someone could help me understand the following:

  1. When I created an account on OpenSea there was a one time gas fee. After that I can mint as many NFTs and create as many collections as I want all for free. How is this possible?

  2. If I programmatically mint NFTs on the mainnet for example by following this tutorial, I must pay the gas price when I deploy the contract and for each NFT I mint right? Seems like it will cost a fortune to mint 10,000 if I have to pay a substantial gas price for each mint.

  3. I've looked at Cargo which is supposed to be designed for batch minting but it seems like there is actually a lot of hidden costs.

  4. Is there an inexpensive solution (<US$500) for me to deploy 10,000 NFTs other than uploading them one by one manually onto OpenSea?

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I have no deep understanding of NFT's but I want to share my guesses.

  1. They are probably using classical off-chain methods (using a database) to hold your created NFT until someone pays for transferring it. I think there's no meaning in paying entrance price. They also take commissions for every transfer that is around %2.5

  2. Ethereum network is super expensive. Solution for that using sidechains or layer2 solutions.

  3. IDK anything about Cargo.

  4. The solution that I can offer is this:

    • Deploy all of your NFT's to xdaichain. That side chain has super low fees. (I'have deployed an NFT for 0.01XDAI which is 0.01$).
    • List them on https://xdai.unique.one/ and wait until some sales happen.
    • When you see which of your NFT's are being sold you can bridge them to the main net. (But I don't know how :)

Notes:

  • Go check nifty.ink draw something and mint to see what it costs. (It's really deploying your NFT to the chain.
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OpenSea doesn't actually mint your NFT until someone buys it. So the buyer is usually in-charge of the fee's. OpenSea just stores the image in their database and then does the minting later.

I'm in the same dilemma you're in. I tried looping a mint function, but ultimately you'll be end up paying for each mint.

If I find anything at my end i'll be sure to update.

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