I'm in agreement about he value at the end of lease for A4's. It was a topic of discussion that I had with two premier wholesalers. It's often heard "that one mans junk is another mans treasure." This can be true with a savvy buyer as long as they can get 3 year old A4's or less for a song and a dance. These would be perfect devices to put back in the field under a DaaS plan, even if it's only for a year or two. That model is probably the only potential I see for the off lease A4 devices.
Also in agreement is that yes you can make some good bucks on A3's