$1.00 off Jack in the Box Grilled Sandwiches This post may contain affiliate links. Please see my full disclosure policy for details. April 2, 2010 2 Apr Pin0Share0TweetGoogle+0sharesThere is a new Jack in the Box Printable Coupon good for $1.00 off Jack in the Box Grilled Sandwiches! This coupon expires April 11, 2010! Thanks Coupongal!