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. - P- U4 O) V4 ^: D0 [ @5 _* g. h' B6 N
This is just rough idea.