This is a delicate subject, and has been the focus of some rather disagreeable disagreement here lately.
ED drugs are such a cash cow for the drug companies that we are all feeling a bit skinned. I pay $161 US for 8 Cialis 20mg pills through my ins. co. "approved" and supposedly discount program.
The moderators have asked us not to rehash the off-shore drugs question, so my best suggestion is to discuss this with those who have some experience (as it appears you have), and deal with reputable companies.