Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter. # v' c' [: `( ~! m: E" d; X 5 a7 Q' G! J; E9 r: ]+ A$ LThis is just rough idea.