I`ve never just paid casj for a record without hearing it, nased on a name. It is this kind of Record buying mentality that allows producers (albeit the lazy ones) to rest on their laurels and release any old cack knowing that their reputation alone will sell it.
All artists, no matter how much you like em, will always make stuff you don`t like, and sometimes that is sub standard.
Buy actually listening to it before you buy, and even being critical about it when it is bad, and not buying shiiiite, is the only way the producers will keep on their toes, and strive hard to make that perfect tune.