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.8 g% ~( }4 J; X5 K' X
/ T) F6 L* B) z7 U
This is just rough idea.