Where can I buy rhinoceros horn at a fair price?

Here’s my situation. I am a supplier for various upscale Chinese restaurants and traditional Chinese medicine shops. I specialize in “hard to get” ingredients like shark fins and tiger eyes. A few of my clients have been asking if I could get them some rhinoceros horn so they can make fever-reducing medicines for their customers. I think it’s a load of crap, but it pays good and that’s all that matters. I contacted a business partner of mine in South Africa to see if he could procure any for me. He’s a good man; he gets me great deals on leopard skins. He said that rhinoceroses weren’t his specialty, and he referred me to another gentleman who said he might be able to acquire some horn for me. He was asking $30,000 per kilogram. Is that a fair price?