The best way to get Purity Products coupons is to sign up to their e-mail newsletter. You can find the link on their site. They send out weekly deals and specials.
Again, I must disclose that I work for Purity Products. “Not only am I an employee, I’m also a customer.” I take their Perfect Multi, Dr. Cannell’s Advanced D, and Ultra-Pure Omega-3 Fish Oil. :-)
Purity Products has several sites that list reviews from customers. First, most of their products have customer reviews posted on their products’ pages. For example, if you wanted to read Purity Products Vitamin D reviews, you can visit that page. They also have sections of their site devoted to customer care reviews, product testimonials, and company reviews.