I want to buy from the Frictional Games Store but it seems to be a bad investment

[jens]

It costs extra to download from esellerate, but you can re-download as much as you like from us. It is like this because that is a demand esellerate have to host files.

But it really does not matter which store you get it from, obviously you should get it from the place you like to have the game the most. Personally, I would use Steam if it is an option when purchasing a game from a small developer.