Bittrex to Binance transfer?

Newb here. I just made the decision to switch from Bittrex to Binance with some of my coins, in this case Tether (USDT). However, I wonder, what network should I chose? It is completely new to me. I did some research on the matter, and I found out that Bittrex support the ERC-20 network, so the natural thing for me to do is to pick this option, however; I find the transfer feed absurd - 30%?!?!.

Can this be true? Is my only option to accept the 30% fee if I want to transfer Tether from Bittrex to my new Binance account?

Thanks