Many of the students don't want to learn to use the Power scraper as they figure they will never be able to afford one. Matt the old PM Bridgeport forum moderator took the Kalamazoo class and he was one of the never Biax power scraper. He got 30 PPI by hand. Others who said they would never buy one, but have. You can find them on Ebay for $1800.00 and then sell them for that a year later for $1800.00 or more.