At Kmart, buy one pair of select athletic shoes and get a second pair for $1. Opt for in-store pickup to avoid shipping charges, which start at $5.75. (Orders of $59 or more also qualify for free shipping.) Some exclusions apply. A couple best bets:
TOMS Shoes offers it TOMS Kids' Canvas Avalon Sneakers in Ash or Green for $31.50. Coupon code "SPRING15" cuts it to $26.50. With free shipping, that's the lowest total price we could find by $15. They're available in sizes 12 to 6, although not in all color/size combinations. Deal ends May 31.