Optimus Maximus has just been listed at $39.99
http://www.bigbadtoystore.com/bbts/product.aspx?product=HAS22044&mode=retail

A big round of new KRE-O kits and figures have just been listed.   Devastator, blind-bagged KRE-O mini figures, and a variety of other kits can be found here:
http://www.bigbadtoystore.com/bbts/list.aspx?list=10058

A new case of Bot Shots 3-pack figures has been listed here:
http://www.bigbadtoystore.com/bbts/product.aspx?product=HAS22054&mode=retail