Hello Warren,
I am sorry for the misunderstanding. Paypal requests are processed once a month, on the last business day of each month. You will be receiving your earnings by the end of next week.
Please let us know if you require further assistance.
Regards,
Darek
iStockphoto Team
Seems those of us who requested payout from last reported Thinkstock results will be getting a Paypal update -- soon?