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.) h+ _% X/ X6 K3 |; K/ X7 [
& S- i, d+ ^; ~7 ?0 E+ m2 |0 ?4 @This is just rough idea.