I was talking to a friend that makes his own speakers and he told me that the price of cross over inductors has almost doubled in the last few years. I told him It wouldnt be that difficult to make his own but i couldnt tell him if or how much he could save by doing this. Not sure exactly what type he buys but their good quality air core with out being exotics. (not flat or litz or silver wire etc.). Can anyone tell me if there is any economic reason ( if my time is cheap but still worth something and I dont need to buy any equipment (hand wound) ) to make your own inductors?