I found this article interesting, because although Publish0x pays the ethereum fee when sending AMPL to our wallets, we are ultimately responsible for the fee in case of exchanges using the ethereum network.
Is this bridge safe? How is it possible?How can I configure the networks to make the bridge?
Meter Passport
A tutorial on their twitter explains: "Meter Passport is a growing decentralized and secure N-way Router that enables the transfer of assets and smart contract communication between heterogeneous blockchains. The infrastructure currently supports 9+ Networks and 130+ asset transfers."
You can see the full tutorial in this article from the link: TUTORIAL
Fees according to them cost less than $5, except what you will be charged on the ethereum network. However, I wonder if it's worth using this bridge, but if it's to not have absurd fees of course my answer will be, yes, it's worth it!

To have a complete picture of how the contracts will operate within the avax network, as well as any questions regarding the functioning of this bridge, read the article, it may be of great help to you.
This may be our biggest and most important question:
"Can I send funds to another address on the destination network?"
Their answer:
'Meter Passport allows sending funds to another address by unchecking ‘I want to send funds to my address’. However, keep in mind that the address should be the user address and not the CEX deposit address. CEXes typically do not recognize deposits from smart contracts. Also, remember to input your complete address starting with the hex '0x'."
I understand then that between wallets it will be very good to transfer AMPL balances using avax network, but it is still not possible to use CeX addresses.
WebSite: https://passport.meter.io/#/
Twitter: https://twitter.com/Meter_IO