Nope. Japanese games are expensive by nature. Take Project Diva F for example. Launch price on Amazon JP is 7,329 Yen, which translates to around 70 to 75 United State dollars (USD).I don't really care about region locks, but I still think it is cool if Nintendo remove them for the people who do care. To import a game(most of the time Japanese), you need to understand that language. Also importing a game is mad expensive. For example, I see a lot of Vita Japanese games priced at almost $100 in ebay and play Asia, while it really cost much much less.
Here US launch price of Project Diva F is 50 USD, that is at least 29% cheaper than Japanese launch prices.