Prices quoted include a buyer's premium (10% for cash or check, 13% for a credit card). ???The sale was a huge success and everybody had a great time,??? said Mike Eckles of Showtime Auction Services. ???Advertising signs especially did very well, with many examples hammering for over $10,000.??? Mr. Eckles said more than 1,700 lots changed hands over the course of the three days.