>with a Shuttle flight costing $27,000 per pound, putting the 59-pound teleprinter in space cost over $1.5 million per flight.
That budget calculation is just the weight of the printer itself. I am curious how much blank paper was flown to feed it, and how this was decided? From the font size shown in photo we can assume it was at least several more pounds of paper for "thousands of lines" to be true.
Some quick searching indicates that yellow is easier on the eyes than pure white (that is given as the reason legal pads are yellow). Or that different wire services would use different color paper. E.g. news wires used white paper, weather services used yellow. So news editors would know the source by the color of the paper.
I think what OP was asking is - given shuttle already had a mission with some spare payload capacity, how much did it cost to bring one more pound into space? I think this question has a relevancy to the fact the printer was surprisingly heavy and came with a lot of paper. I'm not sure if there's a good way to calculate this though.
Thus even if there is capacity limits there may be reasons for loading less mass to reduce cost of a mission.