Hmm... Wait for the Wii U release and pay premium price, or buy now for less than $8 via the Humble Bundle and get 5+ other games at the same time? (Currently the list of additional games includes SteamWorld Dig, Hammerwatch, Gunpoint, Papers Please, and LUFTRAUSERS.)
I much prefer gaming on Wii U over PC, but it's hard to argue where the best value is... if you have a PC capable of running the games, that is. Timing and comparative value is a big problem with these types of late releases, and Gone Home isn't the first game to run into the issue.