As with any consulting, cost is factor of scope, time and "prestige" of the consulting company. How many different design concepts are created before narrowing

As with any consulting, cost is factor of scope, time and "prestige" of the consulting company. How many different design concepts are created before narrowing down and how long it takes iterating on a single design to finish? How many branding documents get created (Style guides, font guides, templates). Is there any additional campaigns associated with the branding? The more well known and established success a consulting company has will allow them to charge more on projects. In the past, I worked at a large marketing consulting in the technology side and it was costly to hire us. I later worked at a 10 person startup that updated branding for three real-estate related brands. The startup could never afford the former at that size, but did fine with smaller, local consulting company.