Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter. # H- B( x0 C' q8 t* ^0 Z& D' S0 Q$ ~ 6 H4 l. A1 ~+ lThis is just rough idea.