Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter. . R# {+ i; Q4 P9 p. M$ g1 S# V# M6 r) b ]2 P c2 w- T
This is just rough idea.