It varies some, but the first 5 visits are a higher amount than the visits afterwards. The first 5 end up being about $250 in total. The ones thereafter range between $15-25 depending on your weight. If you donate 8 times in a month there tends to be a bonus of $50-80. So that tends to bring your monthly total to somewhere between $150-300 if you go that much to donate. As a caution, you'll build up a lot of scar tissue at your donation sites if you donate that much long term.
Usually 55 for the first 5 times.
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