Levi,
The iTunes Store sells that album as a "partial album." The version available for download has 3 fewer songs than the CD version of the album, presumably due to some obscure distribution rights issue.
In such cases, the iTunes Store sells the available tracks individually but does not offer an album price. (Even if you had not bought individual tracks, you would not see an album price.)
FYI, the missing tracks that are included on the CD but not on the downloadable album are three songs from his early days with Roy Orbison & Teen Kings.