I experienced this first hand. After interviewing with a company I met on Angelist they said their best offer was 80% of the bottom of their advertised range. It was a tremendous waste of time for everyone involved, and I'm not sure who thought that was a good idea. Even if I'd accepted, they would have landed a candidate who felt misled/disgruntled on Day 1. Not a great way to build a company, in my opinion.