It actually depends on how much business you do. Either you pay 3-5% off the top and a smaller fee, or a larger annual fee and something like 1-2% of the purchases that go through. It can be even less if your volume is large enough. I've seen cash discounts mostly with smaller local stores, who have the most to gain by not going through VISA. A reseller like Dell, I would imagine, gets *very* favorable terms from credit card companies.