I bought my RX450h from Cazoo. It was traded in against my IS300h. I am useless at haggling or negotiating of any form. I watched the RX price going up and down for 3 months and was comparing it to a similarly spec'd car at Lexus Hedge End. Cazoo then dropped the price to below the estimated insurance value of the vehicle, so I bought it.
The vehicle arrived exactly as they had described it. There were minor scratches which were commensurate with the vehicle's age. On inspection, I had trouble seeing them. The car came with Cazoo branded umbrella, drinking bottle, ice scraper and a delivery chap who was keen to explain how everything worked. There was also a set of Lexus branded rubber mats (which have just gone in to the car ready for winter).
The buying experience was simple and hassle free. The only thing I've done so far is swap out the Cazoo branded number plates. It was a big gamble, but I am now a proud and happy RX owner.
As an aside the car will be serviced and maintained by Lexus Hedge End, as was the IS300h. Nice people!