Polo shows a volume of 1000+ btc on the day the 0.01 peak was hit. Mintpal data is unavailable but I bet that wasn't less than half the polo volume. So approx 1500btc worth of coins traded. Quite a lot actually
Not all those traded at 0.01, but close. Still, I'm surprised to learn it was that much. I never saw the 1000+ BTC volume numbers on Polo, I guess I just wasn't paying very close attention. Crazy times.
If you fantasize about someone being able to buy low and sell at the peak, please use the average instead of the peak for sums that are <5% of the daily volume (ie max 6,000 XMR). If the sum is larger, you need to apply a discount to the daily average to get an actionable figure. It is hardly possible that a peak in price would have coincided to one player selling more than 10% of the volume anyway.
So your saying that nobody sold more than 6k at a price above 0.00856. Despite the price being above that figure for 8+ hours, there being several 100 btc volume and the fact as I said there was around the same sort of volume on mintpal (in fact if I remember rightly mintpal hit higher than 0.01)