"There is hardly any product in the world that some other man, woman or company cannot make a little worse and sell a little cheaper" . This 19th century quote highlights the idea that buying on price alone often leads to poor quality.

quality/ˈkwɒlɪti/noun

1. the standard of something as measured against other things of a similar kind; the degree of excellence of something." an improvement in product 

           quality"synonyms:standard, grade, class, classification, calibre, status, condition, character, nature, constitutiofeature, trait, attribute,characteristic, point, aspect, facet, side, streak, property, peculiarity, idiosyncrasy, quirk;