glassdoor pay data is stupidly innacurate.

Take a company that is headquartered in bay area. If they have an office in location X where X != bay area, the est salary for that company in the context of location X is always going to be much higher due to the bay area HQ. I suspect they may not even filter out bay area salary estimates for location X estimates.

There is no way company will pay for bay area salaries for sat location in Omaha.