Is a cheaper dog shampoo as good as a premium one?

Budget concentrates like Wahl's oatmeal and calming formulas carry tens of thousands of high-rating verified reviews and frequent recommendations in r/dogs and r/puppy101, suggesting price is not a reliable proxy for quality in this category. Premium and salon brands earn praise too, but reviewers note many are concentrates or 2-in-1s where dilution and rinsing technique matter more than the label.