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.+ F3 L3 V9 D/ o7 V" m6 g
9 b6 I& c9 a2 U2 p) i, `( K( i9 `This is just rough idea.