Obviously can't say, but will say sales are pretty low. Even lower then my low expectations that I had before launch. I'm still pretty much a noob indie, so there isn't much exposure for my game at moment. Noone really knows about it or that it's even there.
Now the amount of sales when it was on the 2 week sale were pretty good. The total unit downloads were 150% of the that of the 6 weeks (from launch to sale) before it.
I view this as a hobby currently, so while sales are very low, I am happy about them. I have a few games planned for the Wii U currently. Those that have downloaded and played my game have have liked it, esp after recent patch. So I am happy about that!