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. * B1 k7 ?. U+ `+ D! X9 {0 U 1 F& h! d: p3 X4 r9 oThis is just rough idea.