I am interested in buying a set of your Titleist AP1 Irons. I have come across several web sites that are offering your 2010 AP1 Irons sets (3-9P) with steel shafts for hundreds of dollars lower than the listed sale price of around $699.00. Are these sites authorized to sell official Titleist clubs or are they selling fake knock off versions? How can I be assured that what I am buying is really Titleist? Do you have a list of companies or websites that are authorized to sell your equipment? I want to buy your irons, but don't want to be ripped off.