I have a friend that does this and he actually tried to get me to go with him last Friday to do it. He said they paid him $20 just to take some shot to enhance the shit in his blood or something and then he had to go back like 2 weeks later to donate. He told me they only paid him $50 and it took him like 2hrs. Doesn't seem worth it to me unless you really are a broke ass needing food money..lolol