Treatment, the hospital is a title, length of service, education, get money, you are not the clinical front-line personnel, will not take more money than the clinical. The three A hospitals, it is estimated that the evaluation to the intermediate title (bachelor's degree for 5 years) more than 60,000 a year is the most basic. As for the rest, it depends on whether the device vendors you contact are willing to give, you know what I mean.
Personally, I don't think there's any position where you can see "upside" without actually considering it. This thing is determined by many things, such as your leadership is willing to decentralize not, you do things in a way recognized not, and so many subjective and objective reasons. Consumables procurement is a very important piece of the hospital, accounting for half of the equipment section, I think there is still room for growth.