Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter. * q% V- ?) s* @- e- C% t4 L- N- T# e+ u e; a$ g7 [% @
This is just rough idea.