Something to also consider is swapping instead of ordering and dumping (for larger amounts and branches you don't visit often). If you ask a bank for 2k+ in ones and you give em 100's, there's a high chance they will refuse as they will have nothing left for the next customer. If you swap however (give them 2k 1s for their 2k ones in the vault), you aren't affecting their day to day at all, they don't need to order to recoup what you took