Vastly different contractor pricing again

I have to replace a 32 3/8 x 54 5/8 x 3/8 pane of tempered glass in my shower. The Glass Guru quoted me $467.08. The Glass Doctor quoted $800 even.

As I wrote about in I’m really surprised at the range of prices when getting quotes. You’d think that since material and labor costs are similar, prices would be comparable between competing companies. With car shopping you don’t see one dealership sell a car for $46,700 and another dealership across the street sell that same car for $80,000 but that is essentially what is happening here.