book writting - open to bidding

if a book of 500 pages you have to write then how much money you expact ?....... if a book of 500 pages you have to write then how much money you expact ?...... if a book of 500 pages you have to write then how much money you expact ?.... if a book of 500 pages you have to write then how much money you expact ?...... if a book of 500 pages you have to write then how much money you expact ?...... if a book of 500 pages you have to write then how much money you expact ?......if a book of 500 pages you have to write then how much money you expact ?.............