There's a guy in Tokyo who made it his mission to sample over 180 different burgers in a year.

He's put together a terrific blog where you can click the name of the restaurant (in the link, the names are in English and grouped according to Toyo districts) see the burger he ate and how much it cost.

http://palstage.blog.ocn.ne.jp/palog...post_aab3.html

Needless to say, you'll have a hard time finding any Kobe, Wagyu or Matsusaka beef in the list.