If you think you can pay the hourly equivalent of $25K or $50K or even $100K per year and think you're going to get someone who can independently do mission critical financial software work when that guy could get a job for multiples of that if he was any good.....well let us know how it goes.
I think it's possible if you get someone from a country where the Googles and Facebooks don't have offices. Plenty of countries have talented developers where it's still rare to earn $100k a year if you're senior. Silicon Valley companies do hire globally but they only hire the best of the best, there's still excellent people left who earn much less.