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.) {; O2 P# C3 U- \) l0 |; Z
. R3 J. J+ ^; V c2 }
This is just rough idea.