This could have been easily avoided if you had read their FAQ.
Specifically, that paragraph.
As a rule of thumb, you should never purchase or pay a site/company without researching them at least to some extent through their own site and through a little bit of Googling.
That bit of text in their FAQ that I just showed you clearly explains that they do not sell any prescription drugs, but that when you become a member of theirs, they will help you find places that WILL sell what you are looking for. I'm not going to look further into this, but as far as prescription meds go, you'll probably need to submit information on your doctor, etc. to the site you are ordering from. If this is not required, then the site is clearly illegal or may even be a setup site designed for catching people trying to purchase prescription drugs illegally.
In the end, it's best to just stick to drugstore.com. This site has virtually all prescription (require prescription information which they will need to review before shipment) and non-prescription drugs that exist in the world.