Gotta say, buying a camera + laptop in Japan is the dumbest thing on the planet if you can find the same model in the USA and can buy it in the USA. Far cheaper most of the time, esp. with sales.
eg. Black Friday 2006, the day after Thanksgiving, had a $199 Toshiba notebook on sale at Microcenter.com.
2007 BF is coming up in two weeks, and it's likely you'll get the same or better deal then as well.
VS. Notebooks in Japan that are still $600+ to start.
Cameras - fatwallet.com/c/18/
Usually lots of deals on cameras here that make them cheaper than elsewhere, and on BF, you'll see things like 12MP Kodak digicams for $200 at Sears this year.
thus, if you can buy on BF, you'll win win win!!
Otherwise, stop over at Bic Camera or Yodabashi in Akihabara, and compare vs. online prices at http://kakaku.com/
before you buy to get the best deals on Japanese priced models.
Also, look at Bic's, Yodabashi's, and Sofmap's sale ads that they have at the door. If you can buy on listed sales, you can get a decent deal that way as well, but still higher than the USA during BF sales.