Hi Paul, no - i'll still have a use for them and most people already have them or they can be bought cheaply used.
Its a very tidy machine and priced well i think as is. It'll perform as good as anything out there and a lot lower in price than what you'll pay for a comparative machine - Enforcer, Storm etc. I've seen a lot of buggered Turbo's go for this.
Its very easy to maintain as well - the clam shell design allows you access to everything in seconds. Vac motors very easy to replace, pump has quick connects going to the head. Try working on some other machines and then you'll appreciate the design of the Airflex believe me!
Its advertised on the Clean Trader Facebook page as well - see what people say about them on that thread if you need reassurance of how good they are!