From discussion with other fellow members, we are quite certain that the BEK inserts start at 9.30 million range. So. I agree with Sudzee's comments.
As for the non-inserts, only a limited number of notes have been reported. As well, it seems the ranges discovered so far are very limited. For example, all notes discovered are below BEK9.0 million.
For the inserts, it's been discovered from 9.3 million to 9.6 or 9.7 million. That's it. Nothing else.