You'd be much safer getting your own confirmation from a reputable authenticator for that brand who's been recommended by the members here at tPF. Technically ALL name-brand items listed on Ebay are required to be confirmed by the sellers as genuine, but obviously that doesn't always happen. AN AUTHENTICATION IS ONLY AS GOOD AS THE AUTHENTICATOR. And judging from her FB and many of the comments posted here that particular seller has made some poor choices and her choices have made mistakes, not to mention the other problems like poor packing and shipping and items that get "lost" in the mail already mentioned here by numerous posters.
Granted, if you can prove you received a counterfeit you'll usually get your money back, but with the kind of volume she does there are probably a good number of fakes that slip by, as well as a lot of fakes that those of us who try to find counterfeits before they get into buyers' hands just don't have the time to look for. There's no way I'd ever trust the claimed authentication of such a high-volume seller when it's MY money on the line.
In the last few days I found a fake Coach she sold back in December with a fake font used in the serial number.
https://forum.purseblog.com/threads/authenticate-this-coach.889527/page-1373#post-31108706
With the possible exception of Authenticate4U, I doubt if any of the advertised Coach authenticators out there, much less her paid Coach "authenticators", even have a bleedin' clue about what font that particular style made in that plant, month and year is supposed to have. So if that's an indication of the way her Coaches are supposedly authenticated, thanks but No, Thanks.
Thanks so much for your kind reply [emoji253]
Personally, if a seller can't confirm they are selling an authentic item, my interest stops there. I wouldn't get as far as third party authentication. I must admit, (& I know I shouldn't be) but I am always even more shocked when the "big hitters" in the reselling market choose not to make absolute certain they are listing authenticate items. What is the point of being a seller if you don't care about your seller's reputation ??
In recent years I have wanted to embrace the pre-owned & vintage market but attitudes like their's - coupled with crazy prices for "used" items makes it very difficult [emoji15]