I just used them for the first time. I needed to authenticate two handbags and was struggling to find someone local, or online, who could do it accurately, quickly, and could be trusted. I somehow found their website and after reading it through, decided to have them authenticate the items. I sent my photos to them on Sunday night. By Monday night, I had a determination on both of them. They delivered on their promise, and now I have my answers. I will definitely use them again!