Yes, my Viagra did come with a prescription signed by the pharmacist. I am not sure why they are not pharmacy checker. According to the FDA it says to buy from a VIPPS certified pharmacy. Are Kwikmed and Selfserve VIPPS certified?
I don't know too much about pharmacy law, I just know that I received my genuine medication by a licensed pharmacy.
I did a quick look at pharmacychecker. It is not like they are in a Non-Profit business model. They make money by advertising, etc...
Why are they supporting Generic Viagra (when it is illegal)
Compare Viagra Prices on PharmacyChecker.com
Not sure the validity of pharmacy checker when they are supporting generic medications that are illegal to ship to the U.S.