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. ! `0 r( u( j4 b. N& F2 V' Q0 O5 i9 ~+ i! c7 E
This is just rough idea.