You just don't know the market for such things.
To ask such a price, new ones must not be available currently.
Why would you want one? Chances are yours is bent badly, if cosmetic you can get them re-chromed.
If yours is bent, complete with a bent bumper, it will be an accident repair shop seeking the parts unlikely the owner of the car.
The accident repair shop simply passes on the cost to the owner of the car/insurance company.
It is therefore unlikely you have the owner of the car speaking direct to the parts supplier to say 'how much!'
Therefore the parts supplier can see a 'supply and demand' opening, and being a business...
A similar thing happened recently with Triumph Stag front badges with the leaping Stag.
All supply dried up, those with very good badges were getting as much as £500 on ebay, for a badge that when available cost less than a hundred.
Fortunately the tooling fund of the Stag Owners Club managed to get them remade.