lunch box craze

First hello kitty, now this....I saw a bento box shaped like a burger in a website somewhere. What kind of luck would actually lead me to finding it being used by a coworker in the office.....

This is the site and the pic:

http://www.from-japan-with-love.com/hamburger-bento-box-with-fork-and-spoon.html

It is sold for 12 dollars, roughly around Php 563.00. Since she was already using it, I offered to buy it for Php 500. But if she will demand a higher price, I don't think I would buy it. *sigh*