"I made a Linux and Mac build in my spare time just for the hell of it, I have no idea if anyone wants it!"
There could be more than twenty-nine million http://counter.li.org/estimates.php
Linux people who might want it.
Check out some real world sales figures here http://en.wikipedia.org/wiki/Humble_Indie_Bundle
Mac and Linux made up nearly half the customers but amounted to about three-quarters of the cash. Mac users are willing to pay more and Linux users are willing to pay a lot more.
And something else, have you seen the numbers comparing the PC and Mac piracy rate to the Linux piracy rate? Thought so, no one has, Linux piracy is too small to bother.
You want to sell your game in places that don't speak British English so you can sell more? That takes paid translators right? Not necessarily. World of Goo is available in Dutch, French, German, Italian, and Spanish (AKA: €UROP€) due to volunteers http://en.wikipedia.org/wiki/World_of_goo
. It pays
to be friendly to the Linux community.
Regardless, I don't use Windows, especially if it is called WINE. I want a Linux version and am willing to pay more than the Mac people.