The Xbox version that we are doing is a port of Mobile / Tablet version, which will be good game for XBLA (Xbox Live Arcade).
The plan is to build the PC/Steam and Linux version with superior graphics so that we can then implement for the Xbox One version, which will be a technological leap from original XBox / Mobile game versions which will have 2D characters. For XBox One we are planning to go full 3D for everything, including new graphics, etc. This is why there is a significant price jump.
However, if you guys want a straight port of the Mobile & XBox game for PC - WE WILL DO THAT. I didn't think there would be much interest but I guess there is. So, YES - for $15.00 we'll throw in the PC/Steam straight port along with XBox and mobile systems.