That little over that long a time this group where a bunch of Amateur's.
I've seen more than that lifted from one Financial Institution in under a month through little Transactions on Customers Credit Cards and none of those Transactions would raise suspicions like renting Private Jets from people who would never normally do something like that.
If they got so little over such a long time I suppose the obvious question is why would they bother?
If they where Professionals an attack 300 times bigger could be expected and even then they wouldn't be easy targets for the Authorities.

Col