Currently, four of eight slots are still available with the lowest (slots seven and eight) currently going for US$1,735 (£1,070.00) with four days left to go on the bid.
Auction winners will receive the cost of lunch, followed by a front row seat at a Frontline Club conversation with himself and the philosopher, and taxis from the lunch to the event.
The lunch will be from 12pm to 3pm on 2 July at "one of London's finest restaurants". The Frontline Club event will be from 4pm to 6pm at The Troxy in East London.