I have an extra center brake light with a cracked red lens and with the silvering on the plastic that surrounds the LED's coming off. However, it is in perfect shape electronically. If you are needing LED's to fix yours or think maybe the circuit board is bad you might want to try making one good unit using my electronics and your case/lens. Little plastic tabs are melted a bit to hold the circuit board in place; it looks like snapping them off and using a bit of glue to hold the board on would work.
If you are interested I can send you a picture of this light to show that it is in working order. It's yours for the shipping cost.