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. $ p: y# G0 c9 n3 h* g8 J6 i 9 W. w( C N# p1 C) E9 J3 r9 ?; }This is just rough idea.