That’s the problem with EVs, batteries make a huge % of their cost and have a short lifespan compared to how long cars typically last. EV batteries only last 8-10 years before serious capacity degradation and potentially other issues. 8-10 year old Tesla Model S which is still a very nice car, can go for as low as £5k here, except it needs a full battery replacement to be usable at the cost of around £23k. Taycan battery replacement from Porsche is £55k at the moment so yea, I’d be surprised if a 10 year old Taycan cost any more than £10k