I was about to post that these were just released in America and would be here soon, but DD has already found them at a Toyworld in Victoria, so this news can go here in the Aus section.
The first wave contains Hulk, Ironman, Venom, Spiderman, and are of the same size class as Star Wars Transformers (which will also be labelled as Crossovers soon), so will be priced the same depending on the store.