Thumb Score: +21 Woot! has 3-Count Penn Tribute All Court Surfaces Tennis Balls for $2.51. Shipping is free for Amazon Prime members, otherwise is $6 flat-rate. Thanks to Deal Hunter niki4h for finding this deal. Deal Editor's Notes & Price Research: [LIST][*]These tennis balls are well reviewed w/ 4.6 out of 5 stars by over 3,500 Amazon customers.