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.3 ]; \4 b1 d8 }' \( [- _
5 k+ r. p# f/ o6 B! T
This is just rough idea.