Heres the wiki link and quote:
Billy Meier - Wikipedia, the free encyclopedia

Criticism and controversy

However, prominent UFO proponents such as Stanton Friedman and Jacques Vallee have called the photos outrageous hoaxes. Meier's ex-wife says that she has seen the models used to fake the photos (Sheaffer 1998:34).

This one is good too: Billy Meier Hoax


Along with Underground Video's statement is a photograph showing one of Billy Meiers alleged Pleiadian beamships taken in 1981. After computer enhancement and careful scrutiny, it has been shown the Beamship is really a miniature model made out of an upside-down cake pan, disconnected copper hose fitting, a bracelet, carpet tacks and various other identifiable objects.

And remember telling rebgirl420 she looked like a Pleiadian alien? Yea, I thought that was mean. But no worries, appearntly:

The Meier photograph of the beautiful Pleiadian alien, Semjase, turned out to be a photocopy of a model from a Sears Catalog.
Follow the second link to find this information.