I was very close to buying an ex demonstrator model off them in 2011. They were going to send me out with a guy for a day so I could see how it all works, try before you buy, I had the flights booked and everything...then a local window cleaner showed me his purefreedom hot system, I think it was nearly half the price of the Concept system, so I cancelled the flights and ended up going down to Grimsby for a Purefreedom system instead.