Don't get your hopes up about Hobbyco. They maybe the biggest Hobby retailer but they sure as hell are not the best rc retailer. You own a TG-10 or a Kyosho Pure 10. Then great. But if you start talking HPI, Serpent or any pro car, they are pretty sh*t.
Best bet is Custom Model Cars in Penshurstfor Serpent, Auswide Hobbies in Penrithfor V1RR evo's, LD3's and TC3'sand Radio Model Supplies in Perth for HPI.