I certainly wouldn’t buy one at lease end. Your essential buying a trade car with no warranty @ retail price.
Asked for a price on my then 2017 Skoda Superb SEL and was given a price similar to a 68 plate with about 5k extra miles on. As a cash buyer and no p/x, I could have bought the one on the dealers lot for a better price including warranty and service and drove it home when handing the scheme car back. Rip Off!
Where have you got this information from?
https://www.motability.co.uk/get-support/faqs/can-i-buy-the-vehicle/