Take situacije se tipično pojavijo, ko podjetja tržijo širok spekter kakovosti ali stopenj proizvodnje enega proizvoda; tudi če za določenega končnega kupca ali skupino potrošnikov različne kakovosti proizvoda niso zamenljive, bodo proizvodi različne kakovosti vključeni v en proizvodni trg, pod pogojem, da večina ponudnikov lahko ponudi in prodaja različne kakovosti proizvoda takoj in brez bistvenega porasta stroškov, opisanega zgoraj.
These situations typically arise when companies market a wide range of qualities or grades of one product; even if, for a given final customer or group of consumers, the different qualities are not substitutable, the different qualities will be grouped into one product market, provided that most of the suppliers are able to offer and sell the various qualities immediately and without the significant increases in costs described above.