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.% y7 J+ w( s6 a7 k2 h* s B* B
9 i% ?! e3 m! E& b
This is just rough idea.