If there are specific service contracts in your industry: If you don't know the prices that your employer charges for the service contracts and the profits they make, you could instead refer to industry standards. Chances are you'll be pretty close with that. That information is sometimes made public by certain organizations (sometimes corporations themselves, maybe unions, maybe independent economic research departments etc... at least in my part of the world). If you're a bit more bold you might be able to act like an interested customer with another similar company and just ask about prices via phone call or e-mail. If there aren't generally service contracts, it would probably be included in the product price, so you would have to find out how much profit is made from each sale, and how much of the work that goes into it overall is just for support (like 2% or 5% or whatever), which is probably tricky. On the other hand, sometimes it's enough to know how much profit a corp made, and how many employees it has. How much more money would everyone have if the profit was equally distributed to each employee? Not that that would necessarily be practical, but it's also a good way to paint a picture imho