Can't understand why you're looking and looking for prices on selsens. You have your prop pitch and your controller and the selsyns were FREE. I made you a fair offer plus sending you the TriEx booklet. What else can a friend do in obtaining getting these for $40 ($20.ea.) I think in all fairness that the end of the road for the selsyns stop here at my QTH. Joel, K2QBV