I just bought the Jungle Viper on sale also! I passed on CC and Undertow because I think they were still $12. So, instead, I bought Heavy Water and Nullifier. Along with them I finally picked up the 2011 accessory set for the 12" membership figure and the Action Pilot Dress Uniform set.
I thought about that M.O.T.H. set but ultimately passed. I should have picked up the set of 4 M.O.T.H. sets one of the times they had them all on markdown.
I was all set to finally pick up the 12" talking Astronaut on this sale, after passing on it for years, and they sold out before I bought.