This is just a single anecdote, but it suggests that US software developers cost many times more than coders of similar quality in China ...
Verizon RISK team security blog: ... As it turns out, Bob had simply outsourced his own job to a Chinese consulting firm. Bob spent less that one fifth of his six-figure salary for a Chinese firm to do his job for him. Authentication was no problem, he physically FedExed his RSA token to China so that the third-party contractor could log-in under his credentials during the workday. It would appear that he was working an average 9 to 5 work day. Investigators checked his web browsing history, and that told the whole story.
A typical ‘work day’ for Bob looked like this:
9:00 a.m. – Arrive and surf Reddit for a couple of hours. Watch cat videos
11:30 a.m. – Take lunch
1:00 p.m. – Ebay time.
2:00 – ish p.m Facebook updates – LinkedIn
4:30 p.m. – End of day update e-mail to management.
5:00 p.m. – Go home
Evidence even suggested he had the same scam going across multiple companies in the area. All told, it looked like he earned several hundred thousand dollars a year, and only had to pay the Chinese consulting firm about fifty grand annually. The best part? Investigators had the opportunity to read through his performance reviews while working alongside HR. For the last several years in a row he received excellent remarks. His code was clean, well written, and submitted in a timely fashion. Quarter after quarter, his performance review noted him as the best developer in the building.