I did much the same as you. Went to look at a low mileage 3 year old A110S, was going to compare costs against a new A110 and ended up buying a high spec brand new A110S that had just been delivered
Comes with: Active sports exhaust Mirror package Storage package Front and rear parking sensor + reversing cam Focal audio Telemetrics Aluminium pedals and chrome logos. They also knocked £2,000 off the final price.
I think it depends if its a stock vehicle and the colour / spec.
Dealer I bought from offered a deal ona car that was not to my taste, zero discount on the car I actually bought as he was very confident it would sell quickly