I think theres alot of unkowns with EV’s in the secondhand market at the moment and essentially in the 3rd hand market, Due to concerns of battery degradeation and the cost to purchase a new one. So I share your concerns across the whole EV market, not just the Atto.
Interestingly the Nio ES7 150Kw has asolid state battery good for 528miles and the ET7 with the same battery over 60o miles. Got to be the way to go surely. Nio are already in the EU going up against Tesla with the ET7 and expected to launch here soon but don’t hold your breath on it coming to the scheme