New Roof Rates- $300/Squares

Doing few roof for single family homes in Houston. Are $300/squares for GAF HDZ good rates. Homes are double story standard homes with around 21-24 Squares. Are $300/Square competitive rates for GAF HDZ. Trying to get market rates. It's my first time for the roof. I understand there are other factors such as pitch etc. but i am trying to get ballpark range.