Got my Supernova from eBay last year. I noticed the first series of Exo-Force back in 2006. However they didn't really appeal to me back then. Then last year I spotted Aero Booster in Target. Its design was very good and around $40 I just had to buy it. After that I saw Golden Guardian in TRU... and ended up buying the rest of the 2007 sets (only the human side robots though). And I was tempted to complete the 2006 human side as well after getting Bridge Walker vs White Lightning from TRU. At the time the earlier 2006 sets were already very tough to find in Perth, so I had to grab the rest from eBay.![]()