Service, valet, mot, dents, paint, trim etc, it is the trade average at the moment with main dealers having even higher recon costs, not forgetting warranty to take out later maybe.
My friend is a dealer and they give every car an oil service as a minimum, usually all four wheels need refurbishment and front bumper needs repainting. So most used cars from a dealer will have had this work done.
If you are buying privately refurbishment of four alloy wheels and repainting a scratched bumper will set you back around £400. Oil service £150 so buying privately is not always cheaper.