Although as you point out, if I lived in the states I'd be poked. I visit there often enough, but family is kind enough to put me up and I take the time to save.
Yes, the San Francisco Bay Area... which is not only expensive to live in, but software engineers are in high demand and well paid. But pretty much anywhere in the USA, $30 is not high pay for a software engineer.
There are often jobs that pay more, but they're either the fixed-price ones, or have fewer hours.