JCPenney discounts a selection of Nike men's, women's, and kids' shoes, with deals starting at $41.99. (Prices are as marked for some, although many items show the discount in your cart.) Shipping starts at $8.95, or get free in-store pickup on orders of $25 or more. (Free shipping applies with most orders of $99 or more.) A couple of best bets, each via pickup:
Walmart offers these Toddler Boys' Skull Print Flip-Flops in Black for $1. Opt for in-store pickup to avoid the $4.97 shipping fee. That's $4 under the best price for a similar pair elsewhere. They're available in sizes 5/6 to 11/12.