Yamiya, I've purchased a lot of stuff from them, quality is excellent, lots of NOS, things you can't find easily. Shipping is a little high from Japan but they are great. I try to consolidate shipments to lower shipping. They even have two really cool CB750 tshirts.
This is a labor of love so I try to ignore the cost.
They have very nice pre-painted tank and body sets, I got myself a candy blue-green set, paint is awesome.