If that's "2014" as in Jan 2014 on a 63 plate, i'd say that's fair, especially against another car yet to be built (is that the case?). If it's a bona fide 14 plate then to sell right now i'd be aiming for at least £20k. £19k for a 14 plate in p/x against say an R that won't be here for 6 months also seems fine.
It's May 2014, so whatever that is, vanilla spec ie no options
Seems fair on Vanilla spec. My 63 plate GTD (6 months older than yours) was given a p/x in Sept of £18500 against an expected March trade-in date. Assuming you are aiming for a new car in Sept, you're in the exact same situation - 1 year old car at point of ordering the new one, which will be 18 months old at point of trade-in. You're getting £500 more than me for a car that cost a little more but depreciates a little more as a %, so you got a fair price IMO.
But to put your price in perspective - it is only a fair p/x price on the assumption you're getting a very good discount on the new one, and you are. If you want an R then i'd snap their hands off for 11% to jump the queue.
If you want an ED40, you should expect the same p/x price if they can offer a similar level of discount. If they are offering next to nowt off it then i'd be looking to get at least a grand more p/x to subsidise the lack of discount. Your £19k PP will be sat on their forecourt in Sept for at least £22k.
