When searching for cards : to fill your set with, be sure that they are listed as mint or near mint graded cards. As these are the two top grades with which a card is graded. If you are trying to put together a set that will have top dollar value for resale in the future, or be considered the most sort after of its year and style. If you just want to complete a set of that year and style of cards for the sake of doing so, as fun, or other wise. Than you can save yourself a good deal of money by choosing a card of a lesser grade.