From the home page:
WARNING! Do not buy from macmakeupwholesale.com! All of the MAC cosmetics and accessories sold through macmakeupwholesale.com are bad fakes. They are selling inferior quality items that could contain harmful ingredients branded with the MAC logo... not even worth the $2 per item they are charging.
and we should trust that this site (wholesalemac.com) sells authentic stuff.
Yeah, right.
And they even have instructions how to spot fake pigments http://wholesalemac.com/mac_eyeshadow_color_pigment.html
How shameless can they be?