6pm offers The North Face Kids' NSE Fleece Booties in Drummer Blue/Deep Water Blue for $15 with free shipping. That's the lowest total price we could find by $15, although we saw them for $6 less in May. They're available in infant sizes 1 to 3.
Amazon offers a selection of Keen kids' sandals from $15, as listed below. Plus, Prime members bag free shipping. (Non-members must spend $35 or more to bag free shipping; otherwise, shipping starts at around $5.) The deals: