Participating Walmart locations offer 1 lb. of Ground Beef for $0 when you purchase three boxes of Hamburger Helper, Tuna Helper, or Chicken Helper (five-serving only) via this mail-in rebate. (Scroll down, clip the ground beef offer, and select print to get the rebate form; there is a maximum rebate amount of $6.92.) That's a savings of up to $7 and one of the best offers we've ever seen for ground beef. Rebate ends November 16 and is limited to one refund per household.