Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter. ; G% j1 \6 b- `( L7 C$ N, ^' o: V [; R9 x) e4 f" I# X$ T
This is just rough idea.