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. 3 [' f8 T5 U* Q+ \6 G+ b0 _' j* e: Q8 D: f, Z
This is just rough idea.