Hey sunsanvil
There are a few options,
Is there any Asian Mall in your area? If there is and there is a hobby shop inside they might have some of the Wave and Hasagawa kits. Ask a regular hobby show if they can get these two companies.
There is always feeBay but that the last resort. I know that Hobby Link Japan has the Ma.k / SF3D kits , descent prices and descent prices on shipping and some are on sale.
I've had mine since they came out on the early 1990's and only decided to build one about 2 months ago. Now I want to get a few more.
Talk to you later