How much does it cost to trade coins? I think some charge a small amount and some just charge for withdrawing coins. I am ESPECIALLY interested in 'yobit.net' and 'novaexchange', because it's easier to get a new coin added onto these..
i don't know about the other exchange you said but i suggest you stay away from yobit.net if you want to make big trades (large amount of bitcoin) because they are not such a good and trusted service.
i would suggest you my signature (liqui) but they are still in their Pre-launch and kind of in beta.
so for large amounts as others said, go to bittrex or poloniex.
some exchange applying different prices. but for me the total commission fees were paid very little. was reasonable because they provide all the services on their website.
can't say it was very little if the amount were traded is quite big,just imagine someone trading with big amount of bitcoin like 40BTC at the same time,if the fee is 0.2% (c-cex),it's 0.08 btc at the end,and for some exchangers,picking order will give more fees
while trading you always try to cover those fees with the profit that you gain from your trade so you should have bought at a price lower than 0.2% so it covers the fee.