how much does fill dirt cost
1 Some companies sell clean or screened fill dirt for $8-$15 a cubic yard, or $40-$75 for five yards to spread it 3+ inches deep over a 500-square-foot area (20x25 feet).2  The cost of topsoil depends a lot on location.arge quantities of soil are usually sold by the cubic yard. One cubic yard spread out 1 inch thick covers about 324 square feet. To cover 500 square feet with three inches of soil, you'll need 4.52 cubic yards.