I sold NFTs via OpenSea but ETH doesn't appear in my MetaMask wallet

[nakedwinnie]

It looks like you did pay the gas fees for the listing, you can see the transaction here

Ethereum Transaction Hash (Txhash) Details | Etherscan

[naparstek]

Oh, interesting. So, that changes my math from above.

On Jan. 27 we made two deposits into this wallet totaling 0.14541425 ETH (about $350 USD at the time).

In mid-February we sold two NFTs, each for 0.006125 ETH after OpenSea took its fees. (about $20 per NFT at the time)

OpenSea charged us a transaction fee of 0.02020719096510651 ETH (about $52)

Currently we have a balance of 0.1375 ETH.

So, adding the OpenSea transaction fee into my accounting…

0.14541425 ETH opening wallet balance
PLUS
0.01225 ETH from sale of two NFTs.
EQUALS
0.15766425 ETH new wallet balance.
MINUS
0.02020719096510651 ETH minus OpenSea fee
EQUALS
0.137457 ETH current wallet balance.

And that matches my current MetaMask wallet balance.

Hey, @nakedwinnie, I think this answers my question. Thanks to you and @KBeeTheCapybara!