I have a customer that wants to rewire her 1800 square foot residence because of aluminum wiring and I was told that the only "approved" method now was the COPALUM crimp method. So I went online and looked at this method and thought it does not look that bad. UNTIL I called for pricing. COPALUM makes you get certified through them ONLY! $750 for up to six people and you have to pick up the Air Fare, meals, rental car, and hotel. Or you can go to them for $350. Then you can lease the crimp $1000 for the first 3mo and then $290 mo after that. The crimps are $460-600 for 200 pcs and 200 pcs heat shrink. What ever happend to using a #65 Ideal Purple Wire nut?