I have asked Pavel and got some updates:
The figures (at least, the way you've posted them here) are misleading.
The $11,500 is gross income. The portals that sell it are going to take a hefty cut before the developer gets anything.
That aside, the figures on gameproducer.net don't add up anyway. They claim sales of 334 units at $12.95 per unit, which is $4,325.30 gross income. I can't work out how they get $4,649.84. Likewise with the other two versions.
Sales tax is there.
Different price: There are tax included in the gross revenue. F.e. EU countries have special taxes and the prices are 12.95 for USA, but 15.22 USD for United Kingdom, 19.27 for France, 21.35 for Finland etc.
No, I think the $11000 is net (excluding $900 expenses) because the sales from their own sites add up to about 7.5K net, then the portals (it doesn't say if it's net or gross) but I'm assuming net because a) it's been added onto the total with the other net figures, which wouln't make sense if it was gross, as mixing gross and net is dumb, and b) if the portal $4000 is net, the portal gross would be around $11500 (based on 35% going to developers) which at $20 each (excluding special offers) is 575 sales. Sound a lot? Not reall, as if Xmas Bonus can do over 200 sales in 2 weeks with a 0.5% CR, they could do 500+ with a 1% CR easy, esp. if it's on several portals.
However, I'm quite prepared to be wrong on this.
$4K is NET. I've confirmed & edited it now.
Expenses:
- press release: US $100
- porting the mac version: US $150
- other (download.com, google adwords, etc.): US $650
TOTAL: US $900
The expenses do not include the programmer's time - do they?
No.
But if you do the math... you can find out that if 2 guys do 2 months part time, that would be same as 2 guys do 1 month full time. $10K (what's left after expenses) divided by 2 is $5K.
Not bad monthly salary for indie game developer ;)