Amazon.com, of course.
I did show some restraint. I put the $35.00 social history of medieval Japan back on the shelf until later. And I, sighingly, decided not to buy the Ningen InuYasha action figure at this time.
But I did pop for Edo, the City that Became Tokyo: An Illustrated History because I was weak.
And 8 or 9 other books.
But it was my Grandma who gave me the first books when I was seven about history and exploration and archaeology which turned me into a compulsive social science otaku.
I don't think she would think it was badly spent.
But now I've got so many Japan related books that I need another bookcase....the fun(not) part is trying to figure out where to put it.