How considerably would it value to exchange a four.5x6.5 double thick piece of glass for an automobile showroom?

Qusetions: i'm performing a significant restoration occupation buffing massive windows and also have no strategy what to cost. If I realized an estimate of what an individual would value to exchange, I could get an improved strategy. many thanks!!

Answers:4.5x6.5 is usually that on feet, meters, yards or what.