Try looking for Dutch bikes, ain't gonna be cheap though.
Mamacharis vary wildly in price points and qualities in Japan, from really nice shaft drive jobbies to hunks of junk that barely deserve the name bicycle. The cheap $100-200 ones are made in China, even the boxes they come in are flimsy. Designed to be ridden for a year or two then left abandoned, chained to a post somewhere, until the municipal authorities come along and do a clean up. I bought one for a friend and it survived a couple of days on tour, along the flat, I swapped it for a hotel room when we finished with it.