That is the problem of most because the gas fee is very expensive especially when you send ethereum and bitcoin to other wallets or transactions but if you really want to buy BCH try to swap your funds with another exchanger that has a small fee such as poloniex exchanger and there buy bch using different tokens.
Up until now the most concern of every traders and investors of cryptocurrency was its fee which is as high as the sky. Which is i understand that some of us here were thinking twice if they were going to convert their crypto to in cash it in their respective nation currency. Even myself, it is my most concern and if i had an extra source of income that i could use to sustain my needs in life, i wouldn't want to convert my crypto unless it is so important.