I bought some of the 8mm reels from E14 a number of years ago when I was mainly buying cut tape and re-reeling myself.
The ones I received were not all new, still having some signs of old labels, and none were anti-static type.
I only have a small number of empty 12mm reels, and few if any wider ones. Maybe some 13", but not 7".
Do you work with any local assemblers? There is a good chance they might be able to put some aside...
If you do have any response from MATR I'm happy to consider a joint purchase.