The price in Japan went up by about $100 new, but there was also a tax increase.
It's 89,800 on Amazon Japan, but a few months ago you could get it off there for 79,800 or so.
I got mine on Yahoo Auctions Japan (i.e. used) but it was like new anyway (the plastic film was still attached and it was complete with the box) so I saved $100 off retail by doing that.
I had my friend in Japan just send it to me and I opened it with a T10 security driver (off ifixit.com, $5) and switched the voltage from 100 (JP) to 120 (US) which can be done just by switching a single plug. It's also clearly labelled inside, so you can't mess it up.
If you don't have a friend in Japan, just use one of the various proxy services. It'll still be cheaper than paying $1499 or whatever.
Note that the Japanese version does not come with a 3 prong plug, only two prong. So you'll want to provide your own power cable if you want it to be grounded. I switched mine with one from Oyaide, but you can probably get something much cheaper.
Amazon Japan also offers a good price for the TH900: 119,000 new. I bought mine off there months ago.
You can also get spare remotes for the HP-A8 on there...it's about 1,500 for a fresh remote should you have lost or broke yours. (Unfortunately, it still is just as big a piece of junk as always...wish they made a better remote with physical buttons).