So I take it you think they are designing these parts as a favor to you?
I love your very own statement, "They Claim" anyone can make claims, and the prices they charge are rediculous. Don't compair their price to someone else's just look at what these companies get for about 1 1/2 feet of aluminum tubing the same rubber or silicone union that a plumber would use and lable it a "CAI".
Buy where ever you want. I owe no one for selling me parts but I do help those who have helped me for nothing.