3 millions seems a bit strange also to me, what they are actually offering that other don't do for those money? 
I dont think 3 Million is true about about kucoin, It was expensive but not that expensive.. last time i check was 100,000 USD in listing fees but their Review process is almost the same as cryptopia slow as snail. so its better to wait for cryptopia than to restart the whole process with kucoin
Kucoin was asking 5 btc for listing last time i check.
But as far as i know it takes forever for them to list it. And it can be price for token listings.
I have heard of coins getting charged 15 btc to get listed by cryptopia, so I'm not too sure which would be cheaper.