L.L.Bean offers its L.L.Bean Girls' Mix-Match Dress in French Blue or Coral for $12.99 with free shipping. That's $17 off list and the lowest total price we could find. It's available in sizes 8 to 16, although not in all size/color combinations.
Walmart offers the Starter Boys' Reversible Shorts in eight colors (Ultra Blue pictured) for $5.97 plus $4.97 for shipping. That's $4 under the lowest total price we could find for a pair of comparable shorts elsewhere. They're available in sizes 4/5 to 18.