It's all relative. The ICO price ranged from 6.67K to 10k each, so a first day trading price of roughly 2x the ICO price isn't unheard of. I am sure the price will fluctuate a lot in the coming days and even go down more, indeed it already has been as low as 13.6k on Bittrex.

But short-term price is nothing compared to the long-term potential. If they can deliver the game and it gains traction, even 22k will be considered low.