May I suggest contacting the person who runs this store on ebay:
http://stores.ebay.com/LuftAir-Archi...QQftidZ2QQtZkm
If he does not have what you need, he may be able to find it somewhere. I have purchased from him before and was very pleased with the transaction.
Sorry, but I don't know what a reasonable price would be.
Good Luck - Zemper