I guess it would be very useful to paid 0.5 btc for yobit's listing also.
It's not very expensive in nowdays.

Just compare:
https://coinmarketcap.com/exchanges/coinsmarkets/
https://coinmarketcap.com/exchanges/yobit/

P.S. Talking about Cryptopia...
I've heard that it's about 5 BTC for Cryptopia's listing, but it is VERY expensive.

I guess yobit is more reasonable decision then crypti, especially if we'll take into account the volume of trading.

https://coinmarketcap.com/exchanges/cryptopia/