I went to Shirokiya the second day it opened.  I spent almost $20 for a little palm sized okonomiyaki and a drink.  I told my wife that this place is not going to last even though there were long lines everywhere.  Went there a couple of weeks ago.  Almost half of the spaces were vacant, and it was easy to find a table, even though it was peak lunch hour.  Too pricey!  I hear the "IN" spot to go is Foodland!