Not sure about that to be honest. Isn't the recent criticism that everyone is giving them away!
The reality seems to be that a certain "type of buyer" is expecting one of the finest hot hatches ever made with a reasonable mileage, full service history etc. for about £2,000. Strange how Civics, MINIs etc. are not affected in quite the same way.
What's doubly frustrating is that the same people a month later will put £5,000 of "mods" on the car.
The other thing that winds me up (even though I am not selling a car!) is that there seems to be an assumption that if a car needs a cambelt or "the dampers haven't been done" (the favourite bugbear for Trophy sellers) a buyer wants to knock off about £1,500 even though the car is a perfect example, has a full service history, has been garage parked, never been near a track and so on. I know some work may need doing but that's life. The work should be factored into the future costs of running the car, not necessarily the price of the car when you buy it!
Again, I have noticed this particularly in the Renaultsport market. Possibly because of (over?)active owners' forums.