Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter.; h1 X/ a( E4 q" m) Z1 L
3 Z$ W' ^& R- i/ o9 R# Q% g
This is just rough idea.