Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter. 4 o/ r" {9 p }2 ?* S& A) a3 ~* W5 V- j" I/ s% [$ _% k; `
This is just rough idea.