“Our Metrics predict that for each week you don't implement our solution, you are losing $100,000 revenue which exceeds the amount you are trying to negotiate!" A strong point, but don't expect to be the first person to play this angle, and it's likely to be met with a negative response, perhaps something like: “If I skip running a thorough Procurement process with every bit of technology put in front of me just because it has a positive ROI, we’d get ourselves into a real mess.”
