According to a Twitter post by Darth Geekula the proper Hot Wheels Star Wars starship / vehicles are appearing in Canadian ToysRUs stores priced at $6.99 (I'd guess that's Canadian dollars). One of the replies says they're also appearing in the UK toy shops.
Hopefully they'll get down here for the next school holidays (and school holiday toy sales!), but I'm guessing they'll be about NZ$12 - NZ$15 each, especially if one chain gets a silly exclusive deal.