First, cos it's an indie game :D
We make this game cos we really really want to, it's more than passion, it's like an obsession, since we discussed the game idea: what if in a game, we can shift to the past, do something there and go back to present to see the "butterfly effect" right away, that would be awesome! So we just make it, little by little, still today. :D
We know really well how to develop a game, but to be honest we don't know much about anything else like marketing, prices and dating girls XD We think the lower the price, the more people play our game and enjoy it, everyone will be happy :D
A lower price than when it's on Steam is also our way to show our appreciation, to thank you guys, ones who believe and support us in the development.