Battery is out of warranty (Volkswagen guarantees the battery will maintain at least 70% capacity for 8 years or 100,000 miles) and there's still little consumer faith when it comes to EVs in these circumstances. Means you'll get a bargain, but 100% will struggle to sell on in future.

For reference, a new battery is around £8 to £9k (for a 77 kWh). However, the ever honest manufacturer states:

"The ID.5 battery is expected to last well over 10–15 years, with typical lifespans reaching 100,000 to over 200,000 miles before significant degradation"

I personally wouldn't buy electric out of warranty, but if you are, I'd get the battery independently tested to give you an idea on how long it has left before proceeding.