The Pomera DM100 (Amazon) can be bought easily in the U.S.
If you are in Japan, check out the nearest KS Denki electronics store.
The King Jim Pomera DM100 is sold slightly higher on the Amazon.com site. When I bought my Pomera I was living in Japan, so the price was around $190 dollars (converted from Yen).
Order direct from Japan
If you are brave and want to order the Pomera DM100 STRAIGHT from Japan you can use a proxy service such as Tenso.com, which will buy/receive the product for you. I’ve used Tenso.com to buy Japanese books in the past and have no problems with them.
(If you use Tenso make sure you use the FASTEST shipping available. Why? Well unless you live in Australia, which is close to Japan, you’re order will take 1-2 MONTHS for delivery. I found this out the hard way and was wondering if my package would ever come or if it was lost.)
I’m giving out this information because not everyone lives in the U.S. or has access to buying the Pomera DM100. It’s quite rare to find a brick and mortar store that would sell this device.