Coin age is not the same as BiblePay total. So 1 BBP in your wallet untouched for 3 days is 3 days worth of coin age. At least that is how I understand it. And yes this is an issue for DC'ers and requiring such an up front amount to get started. I am not a large DC'er and I don't have the amount needed as I only have a little over 100k BBP total to work with.