Free America, every cent of yours is clearly priced.

CSL Plasma openly prices blood donations, and the prices can even fluctuate based on the blood bank situation at the time. The most important thing is that they also set up a check-in system, allowing you to earn bonuses by donating 8 times a month.
Most importantly, they have an invitation referral mechanism. If you invite friends to donate blood, I will give you a referral commission.
The American people are definitely human mining machines.