Hey, I'm not sure if you ended up finding that Beast Machines primal yet, but I found a Junkion thread where somebody has one listed for 10 bucks. Not sure if they still have it or if you'll like the custom paint they've done to it, but I figured it was worth passing on since I remembered you asking about it earlier.

http://www.tfw2005.com/boards/items-sale-trade/356745-figures-sale-all-different-eras-need-sell.html