This will allow you to buy ETH vs. fiat currencies such as dollars or euros.
In order to buy the right amount of ETH, be aware of :
The mint price of the NFT(s) you want to buy,
The gas fees for minting the NFT(s)
The gas fees if you want to transfer your ETH from the exchange to your Metamask
We recommend you to always have some ETH on your wallet to cover the gas fees of each transaction you want to make.