Participating Papa John's Pizza locations take 50% offregular-price large pizzas via coupon code "SUM50". (You must apply the coupon for each additional pizza you redeem.) That's tied with our mention from two weeks ago as the best percent-off coupon we've seen from Papa John's since May. (For further comparison, we saw a large pizza and 2-liter drink for $10 last month, still available.) Delivery and other fees may apply. Deal ends July 14.