The dev talked about being excited about the release in a thread from the 6th of august, so I don’t think it ever was on sale? Looks like he went the 100% F2P route with optional donation via an ingame purchase 
So excited to be releasing my first solo indie game (Ikeda) on Steam!
Welcome everyone! I’m still trying to figure out how to release a game on my own on Steam, so all of your feedback and support is greatly appreciated. I don’t know how a lot of this works yet, and I’m figuring it all out, but I will do my best to create a fun game for you to enjoy!
Looks like a nice guy, might give it a shot soonish.
The official Steam page says it’s doable in around 45mins if you are good at platformers, 4-5h if you wanna 100% it.