Zahgurim, The SD-1 might be left out of the 30/30/30 program, since I engrave each person name on a inside information area. I build and lace each fin so refunding if not happy puts me holding the bag. So far no one has asked for a refund. What I have been doing is letting Scuba Board diver's play around with my personal SD-1. I have a large file so far on SD-1 customers, being every careful not to sell to some one with a fin testing Magazine or other Company, or another knock-off artist. So, it is my choice who I sell this fin to, even at $499.00. I must add that the SD-1 comes with a great USA Made bag and one year subscription to Diver Magazine.