Plasma clinic...a CROOKED plasma clinic!
You see, selling plasma is big business. Think about it: they can afford to give the DONORS almost 40 bucks, so you know they are making serious mad cash off of the stuff.
I worked about 11 months in a plasma clinic that would regularly fudge the rules for donors (allowing those with high BP, certain conditions, etc.) to donate. These people were the absolute dregs of the Earth. Some came in drunk, most had no teeth, all smelled bad, and without exception, they were possessing some of the worst attitudes in history. Fights would break out, stuff would get stolen in the parking lot, it was terrible. Lots of belligerence, no respect, frequent demands, sometimes open hostility. Moreover, all of the staff were terminally depressed, and were not pleasant people to work with for the most part.
Icing on the cake? I had to stick these unpleasant people with 14g needles ALL DAY.
It sucked. Before I even started, they cut everyone's pay (crooked, eh?), which seriously undermined the reason for doing it. Fortunately, I did it mostly for the money and also to get some phlebotomy experience, but no amount of cash would ever have me go back there.