Does this seller have lots of brushes and from other manufacturers? That's usually something that should make you suspicious. How about you go to a NARS counter and look at some brushes there. On the NARS website the brushes aren't identified by number at all yet most of the fake sets on eBay are. I see that some of the brushes in the photo have numbers on. Check to see if brushes in a NARS counter have numbers on them. I'm not certain whether they do or not.