Funny ,3 hrs ago it was 419 ,and now 422? I really think his the one "buying" maybe the $1 membership ,or one of his over zealous worshipper, just to keep the appearance that everything is not that bad.
I think if a patron's payment doesn't go through when charged at the first of the month, they're dropped off the count and notified by email. Then if they fix that and send a payment, they go back to that tally.
That's why it fluctuates so much the first few days of the month. You have people who cancel their patronage and those with payment issues all drop by the end of the day on the 1st. Then any who correct their payment issues or reactivate their account after getting that notification will go back into the overall count.