I was doing a web search and happened upon this web store I'd never seen before. hamakurashop.com/index.php They're in Japan and say they carry mainly Japan-made goods.
I haven't ordered anything from them, so I can't speak to quality or service, but their selection and prices look good. They have sedgeleaf sandogasa and they have waraji, which are both difficult to find mail order.
Anyway, good to find an alternative source for some of these items. If anybody orders from them, please post here about your experience.