Do you get paid for donating blood rare types of blood?
In the UK, blood donation is voluntary, but I have just found this article which says that in Russia, US, Germany and China, blood donors are paid, which surprised me. Whether or not you would receive more if blood type is rare I don't know.
theguardian.com/lifeandstyle/2015/jan/25/wrong-to-pay-blood-donors-safety-compromised