If you have been following the RCU classifieds, there's a seller "longerbeach" that will do probably do it for you. None of the items are his, he is simply re-listing these auction items from Japan at very high prices. If he finds a buyer then he goes for the items. But it'll probably cost a zillion dollars based on his recent listings.

But you can simply buy it yourself much cheaper through many of the proxy sites for Japanese auctions. They will bid, warehouse, pack and ship to you. MK kits are still fairly available in Japan, and prices are reasonable.