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I did get an airdrop but it is on the Ethereum network. It's not much but with the cost of the fee, it doesn't make sense.

I confess that I have never used Ethereum, I have even tried to understand its platform, how it works, but as you said...

it is very expensive and if you are moving small amounts it is not worth it.

No. It is better to use Arbitrum due to fees being much lower.