Closetmustgo and allcosmeticswholesale.com are the same person. She links her feedback from her ACW site to her eBay site. She is definitely one of the most trusted sources for authentic products. I did see one post questioning her authenticity. I didn't read the entire thread but it is possible sometimes a buyer isn't familar with certain product lines. I know 99% of you girls know your $%^&, but there are a few that can ruin a seller's reputation unknowingly. For instance I've had a buyer post a message saying that the Plushglasses I sold her were fake because the handle were not like other lipglasses (which they are not supposed to be).
To be honest, when I first started out selling on eBay several years ago, the wholesaler I had would slip in fake pigments. I had enough knowledge to know this, get my money back and drop this wholesaler. Plus they were just obvious fakes! I haven't sold pigments on eBay until recently where I can guarantee their authenticity. Plus after a few years, you make new connections, get licensed and have more options available that are straight from the source.
As I said about closetmustgo, I have only known her for a little under a year and can say that everything she sells currently is the real deal. I haven't known her before that so I am not familar with what she sold. All I know is currently she has a HUGE selection and is definitely one of the most trusted sources for cosmetics, including MAC.