Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter. 1 v, K% v+ i) y8 S+ ]6 Y N2 r" e$ s( I4 j
This is just rough idea.