What's the going estimate of how much Pirate has taken in, not counting any interest? BTC100,000? BTC200,000? No clue? Have some of his clients revealed their payments?
Between 100k and 300k btc, and that's just with the information that we have. He could easily have more.
So he took in 300k... how much has he paid out? Without a reference point, coins flowing in means nothing.
I think the 300k is a rough estimate of current holdings based on last week's interest payment.
It appears that at least 22k BTC was paid out in interest last week. Assuming nobody automatically re-invested, and that everyone gets 7% per week, that means total holding are 22k/0.07 = 314k BTC. Of course some people do re-invest, and some get lower interest rates, so the real figure will be higher than this.