What a claim on Arc costs, all in USDC
The Tokenry fee for a claim from an unlocked position on Arc is 3 USDC, and each claim covers one position. Gas is added to the Tokenry fee and goes to the Arc network.
Gas on Arc is paid in USDC (Arc's docs), so your wallet needs only USDC and no ETH. The Arc hub explains how gas works on Arc.
The Tokenry fee is paid in the same transaction as the claim. If that transaction fails on-chain, it reverts and the fee is not kept, but the gas is still spent.

