Aurora does not charge any fees for bridge transfers.
You pay the ETH miners fee which is paid once during a transaction on the Ethereum blockchain.
After the transfer from/to Ethereum is finalized, you will pay only the transaction fees of the respective network where your assets are (<$0.01 on NEAR).
The trustless bridge architecture does not allow for cancelling the transaction that has been initiated.
If the fee is too high at the moment, you can wait for the Eth gas prices to go down and finalize the transaction at any time in future.
The Rainbow Bridge is a trustless bridge between NEAR and Ethereum blockchains.
- You can use this bridge when you would like to use your ERC-20 assets with NEAR dapps.
Aurora bridge is the same architecture for transfers between Aurora and Ethereum.
- You can use this bridge when you would like to use your ERC-20 assets with Ethereum dapps that have been deployed on NEAR through Aurora.
The time to finalize a transaction from NEAR to Ethereum is unlimited. You can return at any time in the future to finalize the transaction.
Finalization of the Ethereum -> NEAR transaction should be done within 2 weeks, but transfers are usually auto finalized within 10 min because NEAR fees are very low.