I have purchased from them on ebay and had a lens fit issue (the lens didn't fit the right orbital also had a small defect in the iridium.) I sent them a message on ebay and heard back within a few hours. They had a replacement set in the mail to me that very day with a prepaid envelope to send back the defective set. Second set fit perfectly without any imperfections. I like their lenses. They don't give me a headache for whatever that's worth. My aftermarket preference is Linegear because they are proven to be excellent, but I have a beater or two with Ikon lenses because they are cheap and seem to be of excellent quality.