More of wave 2 of the WFC Siege toyline continues to be found at Australian retail, while we still wait for the national retailers to even stock the toyline. As such, we might not end up seeing wave 1 of most size classes at stores like Kmart, Target and BigW... whenever they eventually get those sizes in.
Found at several Toymate and Toyworld stores this week in different states (as well as one Target store today), are the second wave Deluxe toys - Ironhide, Prowl, Sixgun and Chromia.
To play it safe, if you are wanting to make sure you get any of the wave 1 toys, perhaps check out Amazon (Australia or America - the stock will come from America), or any other online store that has them that you trust.