First make sure you have selected the right kind of cleanser for you hair. For example, the cucumber-aloe doesn't make much difference in my hair, but boy the fig and lavender sure do.
I check chazdean.com for the products I want, but then purchase them from QVC, and amazon.com also sells it. The products are generally cheaper and unlike purchasing through Guthy-Renker, there is no ongoing subscription for the product. You do however, have the option to place a purchase on repeat / auto-replace if you like that, but again it isn't required.
All products purchased directly from Guthy-Renker (regardless of which website is used for access) are set to auto-send. I think it is important to make the distinction between the product and the provider.