I agree absolutely (well, 262 and 234 could be dropped a bit).
The perked prop fighters only enjoy a very marginal performance advantage over the likes of the La-7, P-51D, Fw190D-9, Bf109G-10 and Typhoon. Most (not BB frequent posters) players only earn perk points at a very, very slow rate. So slow that a Tempest is a once or twice a month extravaganza, that is "rewarded" by a "Gangbang the rare plane" event that their skills and lack of familiarity with their plane leave them ill equipped to deal with.
Either that or they fly incredibly conservatively. I have 325 perk points as of now, when I flew the Spit XIV today I climbed high and found the enemy attacking our base. Among them were 2 La-7s, a P-51D and an N1K2. I tried to get the La-7s, but they'd always break into a diving turn. I knew that if I followed I'd never, ever get out. La-7s and P-51s being faster than Spit XIVs. I tried to get a shot, but took absolutely no chances.
I landed it later with every round of ammunition still onboard.
The perk fighters just aren't that much of a reward, especially when the gangbang is factored in.
The current prices don't control these fighters, they eliminate them.
My suggestion:
F4U-1C: 8 points
Ta152H-1: 12 points
F4U-4: 16 points
Spitfire Mk XIV: 16 points
Tempest: 20 points
Ar234: 25 points
Me262: 100 points
If these prices don't adequately control the populations of these aircraft, then raise them. Right now they are scenario aircraft only it seems. They are priced out of most player's reach, yet the prop perk fighters are barely better than the top end free fighters.