I called to get an auto insurance quote before getting the auto, and the actual amount being charged is a transposed figure ($407 became $470 per term). My quotes in the past thirty years have been mainly accurate, but the rep told me it's "expected" and "commonly known" that the actual premium will be more than quoted. And my dentist informed me multiple times that the latest procedure would be just under $400, then I was billed over $600 by the desk clerk after the procedure. The insurance is non-profit and the dentist is through a dental school, so this culture of overcharges extends strangely even to non-profits.