Sumoku $9.25 July 31, 2014 by Terry 1 Comment (66 reviews) Lowest price to-date! Here’s a great deal on a fun game. Get Sumoku now for just $9.25! Search for cart fillers for items to help you reach the $35 FREE Super Saver Shipping level. Or if you haven’t yet tried Amazon Prime, sign up for a 30-day trial and get FREE 2-day shipping!