A purchase of a $500VGC with a Kroger GC will require override by the "cashier-prime" (as I call it. The person with the red vest on -- need not be manager). This may not have anything to do with it being a VGC but simply a threshold for any purchase via a Kroger GC by how it was described to me. Regardless, you will draw attention to yourself at 500.

Not sure where the threshold is. $100x2 won't kick it.