The “cheapest” current price for the D200 (body only) in Japan is 148,999yen at E-Trend, at Akihabara (according to Kakaku.com) (this is not cheaper than normal prices at BicCamera or Yodobashi), minus 10% with point card though)http://kakaku.com/sku/ShopView.asp?s=325&PrdKey=00501610928
The map on the web site is not very good. Suehirocho subway station is the station shown on the left, and E-Trend is about 40m east of the station. JR Akihabara station is off the map at the bottom. From there, take the “Electric Town” exit, go to the right after the ticket gates. Then go left up to the main road. Turn right and follow the road north (it is the main road (top to bottom) on that map. Follow it until you can see the subway entrance, and walk another 20m to the crossroad lights. Go across, and turn right. E-Trend is inside a curve glass entrance about 20m along next to a small lane.
You can also get a D200 with ED 18-70mm lens kit, 176,000yen.
The cheapest is at EC-Powershttp://kakaku.com/item/00501610929/
To find it, walk past E-Trend, and then follow the map (the intersection at left is the same one as in the E-Trend map)
Prices at BicCamera:
Body: 164,400yen, minus 10% if you have a point card.
D200 with 18-70mm lens kit: 208,000yen, minus 10% if you have a point card.
The D200 is not much cheaper in the discount shops.
On the other hand many other cameras are a lot cheaper. The D200 is more a premium camera, so the price is not very flexible.
Yesterday I bought a Canon EOS Kiss X(same as 400D or the Rebel XTi) for a friend.
It was 67,800yen, but at Bic, it's 89,000yen.
Body + DX18-70 lens kit: 144,800yen
Body + DX18-70 lens kit: 117,500yen
Body + DX18-135 lens kit: 121,000yen
I'd buy the D80 !!!!