I findit hard to get hold of jibbitz where I live too as in Yeovil there are only two shops that sell crocs-
Tony Pryce Sports-they sell caymans and mammoths
Millets-They just sell black, navy and khaki caymans, lavender Mary Janes, (not up to a size 8 though
) and Kids crocs.
So I can only get jibbitz when we go out to LAMCS in Glastonbury or if I get my sister to buy them for me on the internet.