Has anyone EVER seen this stuff?

ok..I am a HUGE Nightmare Before Christmas fan..I found the tupperware sandwich box..I saw this picture on a website http://www.worthpoint.com/worthopedia/japanese-bento-the-nightmare-before-christmas-6 but I can't seem to find the stuff..I want I want I want :) if anyone has any leads to finding this elusive gear it would be much appreciated (have already tried ebay)