I agree. No one has used them. That could have and should have been the short answer. I was clued in to them by an unsolicited email from a "web supplier".
I will give you the nerds guide to checking fake web sites:
Whois is probably a good start. Use them to find out who owns the site and how long they have been in business. You will find that some of these sites are all owned by the same person, have been in business for less than 2 months and the sites all look the same (ie. page search engines, products, pics, prices). As people have said, "Google it". In some cases people will have started threads on boards alerting people of scams.
It was a search for Biomex that led me to this site. Steroidology is one of the few mentions besides the site actually offering them.
I agree with caution just not the way people are patronized. If you don't know, you don't know.