You can go to the
advanced search, under publisher type uncheck doujin/indie and bootleg, under category click once to get the green checkbox at "game" (and for more restriction, you can select the red x for other categories, it appears on a second click). Next, look a bit more down and find "currency region" that works as a country where the release was marketed and sold. Choose the currency you're interested in, tweak more or less and hit the search at the bottom.
The only noticeable problem is for Euro - meaning all the countries using the Euro are simply "merged" if selecting it as a currency so you can't set the parameters in advance to know which is German, Italian, French etc. release. However, the notes might have "German release/version" or such (additionally enter something like that in the "notes contain" search field to find these albums better). Only the releases before the introduction of Euro retain European country specifics (so for example, if choosing DEM, you'll get the German releases while Deutsche Mark was active). There's no problem for countries that never adopted Euro though.