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. " W; h+ Z& T3 T" h: h 2 B3 m6 T8 f6 f+ M8 RThis is just rough idea.