I also found devy at Tuggerah today for about the same price, in some Toymate. They also had combiner wars optimus, hound, megatron, megatronus and a few who's names I've forgotten.
prices seemed about average, but they did have this huge Rescue bots optimus that I've never seen before (about 2.5 to 3 foot high?) and some cool tiny "puzzle" bots - megatron, starscream and shockwave. each one of these had a g1, prime and I think animated version. I think they were about $20 for a pack of 3