OK, I figured it wouldn't hurt to check out the S&H costs from Hobbylink Japan (I've never done business with them before, so my understanding of how they do things is only based on what I read on their webpage):
Kit cost: 7800Y = $67.67
Shipping comes in two flavors, based on size and weight - but based on the size of the kit in its description, the Takao would go by the more expensive route:
S&H: 3200Y = $27.76
Add these together and you would be spending $95.43, which is $24.52 less than just the cost of the kit from Great Models. Add on their S&H and you'd be saving even more.
NOTE: This is only the cost for the basic kit - not the extra PE also offered by Aoshima.
This is not to say that there aren't hidden costs involved in purchasing from HLJ that I'm simply not aware of, and certainly doesn't take into account fluctuating currency conversion rates. And there might be an extra fee involved just for currency conversion (don't you love how someone somewhere gets a hefty fee just for spending 10 seconds with a calculator?)
But, unless other information comes to light which changes the information we already have ... I'm planning on placing an order with HLJ sometime soon.