Toysrus.com has Baxter Robot in stock...
 

In case anyone is still looking for him...

http://www.toysrus.com/product/index...tId=2644702&cp

And I very recently (as in I got him in mail on Monday, I think) ordered Gen from a site called actiontoys.com. They price figures accordingly, although even after shipping Gen only cost me $22.

Any other rare figures might be available at sites like toyrocket.com, too...although it's been awhile since I ordered there.

Good luck with your searches!