A case of the AOTC wave hit my local WalMart - and as luck would have it they still had a Zam on the pegs (all that was left besides her was the Obi-Wan, Super Battle Droid and Jango Fett) - and I wanted a third one of her to open so I could display her in third head/scarf configuration.
So now with the exception of scoring another ROTS Darth Sidious and another ROTS Magnaguard, I'm all caught up with Vintage for right now. And since I haven't seen ROTS waves hit in a long while, I'm sure that I'm going to have to rely on the secondary market for those...