Informally I was told I could get a 40% instant raise by joining a company like this. I bet it can be more than that though. I haven’t pursued it yet because I don’t think my skill is enough.
I've seen people doing that stuff get yearly pay that is about the price of a house. That is good pay. I've seen stock given, and I've seen bonuses that seem nice, but it makes more sense to focus on pay. The pay is fine.