The only ones buying supplies now are the old-timers. The guys coming out of college now don't even know what an erasing shield is. Once the old guys are gone, that will be it. If CAD plotters are wiping out your manual drafting supplies sales, the logical revenge is to sell CAD plotter supplies, from media to inks. Many shops go right to the root of the situation and sell the plotters themselves.
Paper is probably our biggest seller and profit maker, and it's driven by our machine sales.
Hardware accessories are also a potential market. The right accessories can make the 5SI far more efficient for your client, and put a little more profit into your cash register. But don't stop your diversification at plotter supplies and the like. Behind each CAD plotter is a suite of CAD software. While Autodesk has long-established dealerships, other companies looking for a way into the CAD market are interested in reprographics shops as dealers.