Cheapest way to go from ETH to SNX ?

Hello there,

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I have some Ether that I would like to sell / swap / bridge ? to get some SNX and stake it (an operation for an airdrop). The airdrop does not need a minimum amount, but even when trying to swap through metamask the gas fees are around 80 Dollars.

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Any idea on how to save some money going from ETH to SNX ?

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Thanks and sorry for the noob question.