Amayama.com is now showing high percentages for parts listed in their system. If you don't see a parts group/item anymore, likely it was removed from the "available" parts selections.
They send an email within a day or two of any items not being available, 100% not available due to stock.
It does mean it is coming from Japan or the UAE, and shipping from Japan EMS went up mid June.
If you find it listed there, it is somewhere out in the real world on a shelf, whether with Mitsu or their offshore (read domestic/Asian/Euro) holdings.