Why do second-hand electric cars seem so cheap?

Not so much struggling to sell but they mostly have new models on the way and they're trying to clear inventory on the old models, so there's big discounts on new cars. And if you can buy a new EV for £20K, a ten year old Zoe isn't worth as much as it was when every EV was over £30K. The Corsa-e can now be had for £21.5K, while the cheapest ICE Corsa is £15K - that's the lowest EV premium I've seen between comparable models and basically means that, if you do 10,000 miles a year, the total cost of ownership (purchase + fuel) is the same over four years. (assuming you charge over night at home on cheap electricity) That's a big shift - 10,000 miles a year is close to average mileage. Previously you didn't save money by owning a new EV unless you were clocking up a lot of miles. If owning an EV is now effectively cost neutral for average owners, the incentive to shift for anyone doing more than average mileage becomes even greater.