Just because something costs more money does not mean it is better. Pricing strategy is very complex and rarely has anything to do with manufacturing costs by themselves. It is all about a marketing strategy to maximize profits. That is why there are so many government regulations, testing labs, and competition. Blue Def, Walmart, and many other reputable brands meet the proper certifications and testing. So it is foolish to pay a higher price for that product. This is a guide that some companies use for pricing. Companies are in business to make a profit and do what they have to do to do that. https://quickbooks.intuit.com/r/pricing-strategy/6-different-pricing-strategies-which-is-right-for-your-business/