There are few groups whose output shows as steep and steady decline in quality as Blood Sweat and Tears. Their first album, when they were effectively Al Kooper's baby, was great, but didn't sell well. Kooper then left and they made a very good, more commercial and less demanding album made them stars. From that point forward, things got steadily worse. Subsequent albums were quite spotty, with an increasing amount of group-written weak material (outside of Al Kooper's contributions, the first two albums comprised mostly covers, albeit often strikingly well rearranged). All but hardcore fans can do without the albums after the first two, and even the hardcore would be hard pressed to get strongly behind the last two albums included in this box.
The low price tag is appealing, and the last three albums on this box do contain a few (though only a few) pretty decent songs. But it's hard to get too excited about putting this on your shelf.