Even entry-level candidates have some idea of what jobs pay. Some recruiters are more circumspect, but a lot of them will give a salary range if you ask. That

Even entry-level candidates have some idea of what jobs pay. Some recruiters are more circumspect, but a lot of them will give a salary range if you ask. That information can also be found on places like Glassdoor or by talking to acquaintances about the offers they got or getting second-hand accounts of offers that people got. That information can be pretty inaccurate, but people still make decisions based on it.