I bought an OVA T4 last December and It's a pretty nice kit. The aluminum stuff that comes with the kit is anodize black, not silver color like in the web site. Comes with same arms as the Inqubass. I bought all replacement parts and all the hop ups that they had for it at the time.
I ran the car at RCCAR race only in practice and it handled really good.
Anyway, you can try to get it from Hong Kong if you can but they have to order it themselves. They mark it up from the yen that's on the box in HK$ so it's not a bad deal. But I don't think that any store will have it because of the price of the car.
I bought mine in Tokyo, Japan. $308USD