OCN brand treat very good services in Japan after April 1st 2014.
●SIM CARD PRICE:Start at 2,000 yen~
●SERVICE FEE:900 yen/per month (exclude sales tax)
●SPEED:150Mbps (maximum)
>If you use over 50MB/per day,the speed is restricted under 200kbps.
●WHERE:You can buy SIM CARD at shop or online shop like Amazon.jp.
Everyone think same things.It's really good.
I'd like to try it soon!
OCN:
http://service.ocn.ne.jp/mobile/
*It's written by Japanese.