Anyone know where to get Rise of the Witch King?

Hi Guys 

Anyone know where to get Rise of the Witch king? It's the expansion pack of an old game I own (The Lord of the Rings, the Battle for Middle Earth 2).

The game is discontinued, and the prices on Amazon are simply ridiculous.

I need the expansion, because I want to play a mod of the game. Any ideas where to get it would be greatly appreciated.

A little cheaper on ebay but still expencive http://www.ebay.co.uk/ctg/Battle-Middle-earth-II-Rise-Witch-king-Windows-/93948635

 

Thanks  :) But considering that I have to pay for shipping too (I live in South Africa), I don't think that's worth it just for a mod... So saddening :(