As I said before, freebitco users who use FUN for Premium benefits bought coins probably already on the site, withdrawal fee is so high it makes no sense to buy at Binance and transfer to freebitco.
FUN Token price is a bit higher at Freebitco than the normal price on the exchanger. Actually, freebitco takes 1 to 2 satoshi extra for each Fun token purchase on their site. So, it is better to buy FUN tokens on Binance if you are buying at least 10k FUN tokens. Even it will be profitable if you buy more than 10k FUN tokens to transfer them in your freebitco account.