Any writer that is submitting a screenplay knows they have to sandwich their work in-between two sheets of 60lb card stock, giving the studio a good meal of a read.
Wal-Mart sell 50 sheets sheets of 60lb black card stock paper for $3.95. The Writer's Store in Los Angeles sell the same card stock for %9.95, but you get 24 sheets.
As a writer, you have to save money because you don't much to spend. Check out Wal-Mart for black card stock that works perfectly to cover your prized screenplay.