Glassdoor/others are good for ballpark ranges which is good enough for me. If you want to know ahead of time, there are some employers who opt into that. IMO the value brought by a human being is complex and they deserve a chance to argue their worth, so there is no sense in advertising a price point that may vary. We are all primarily competing against ourselves in a sense, and allowing wiggle room on compensation lets employers and employees make better connections.

If you don't want that, go to a union, work for a government, or do something with an hourly wage.