Well, considering indie games generally have much lower budgets then the typical hd console or high profile pc release, I think its not a huge risk to say that 500,000 is a great number. Especially considering the game didn't really get a retail push (it was released on digital services before retail).
Since its now avaliable for steam on mac and its price was recently dropped, I think its sales will be getting a nice boost in the short term aswell.







