Not sure about the individual discounts, the first time I heard about such a thing.
It kind of does not make any sense, after all, they (sim centers) are not there to help anyone individually, rather just to make money...
The best bet would be, if you do have any connection to some cl300 operator with at least few aircraft, to contact them.
Usually the established operators do have big discounts on the list prices since they do bring in the volume....
Cheers!