Stick to your own products and prices, most people who care about prices don’t want them, and those who are in need don’t care about a little price difference.
Adhering to one's own products and prices, most people who care about prices do not want them, while those who are in need do not care about any price differences,
Insist on their own products and prices, most people who care about prices don't want them, and those who need them don't care about a little price difference.