Both Sales and Purchase Orders gather the same Producto "price"

Both Sales and Purchase Orders gather the same Producto "price"

While working on the Sales and Purchase Orders, I found out that both gather the Product "price" from the same Price field in the Product information page. There should be Cost and Sale Price fields in the Product information page and the Sales Order should gather the Sale Price information and the Purchase Orders should gather the Cost information of the Product.

Please revise.