. . such as the commenter at the bottom of this [link|http://www.simplyoz.com/products/aussie_food/groceries/vegemite|Vegemite Page] - but probably not very much.
While Kraft won't ship the stuff, I'm sure there's people buying wholesale lots and shipping it in containers of other stuff. At the price it's sold for here they can afford to lose a lot now and then. I got mine for $3.89 for 4 ounces, which is a dollar less than the going rate.