It depends on the country of the person who did the downloading. Firefox referrals pay up to $1.00, but less for most countries.
I too got a shock when I saw this.. I think its a big deal to get someone to click a link , download something and install it.. 0.10 is crap!
For US and Canada its around 1$. for European countries its around 0.50$ most of the time rest of the world its 0.10$
it has nothing to do with country traffic, if it was in India and China would be most paying countries.
Getting paid when someone downloads and installs a program thats not only free but not even made by the one paying you is definately not crap, regardless of the amount paid.
Google pays a max of $1/download, not fixed pricing.. I too get 10 cents for each download. It depends upon the visitor's country