Correction and tip:
I posted the previous post, and the prices are too high, they vary day-by-day: a C750 can be had for under 40,000 yen, and an C860 for 54,000 yen, from the web. The C760 is about the same price as the C860.
The tip:
Go to
www.bestgate.net (usually the cheapest of the 2 search engines). Search for the model you are interested in e.g. C860.
You will get a few products listed, one of which is the Zaurus. In that row in the table click one of the two buttons on the left. This will take you to a list of all shops that have the product. Click on the price column head to sort by price and print out that page. If you take this printout to an electrical shop and show it to them, even the big ones like Ninomiya will lower the price and possibly match it.
For example, I got Ninomiya to offer me a C860 at 59,950 yen, the price on the sticker in the shop was 69,000 yen. Quite a difference, but not all the way to the internet price on my printout (54,800).