Can confirm. Donated plasma to Biolife for a year, and it’s only good for the first 1-2 months when they pay $800-900 over several donations. Then they slowly drop you down to $150-300 over several donations. I managed to get a big hematoma once from donating so I guess that was interesting. The lowering payout, arm twinges from repeatedly having my veins poked, taking 1-2 hours of my day, and cold atmosphere(literally, room temp saline chills you down to the bone in colder months) made it a pain the ass