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.6 J9 f5 W1 P" C/ c! C
! ~9 P0 i2 D' p6 j! u% X2 fThis is just rough idea.