Endless has a sale going on on sandals and there are sandals available for everyone. I found these Teva Toachi Sandal (Toddler/Little Kid/Big Kid) for $23. Endless offer free two-day shipping (and free shipping for returns as well. Other finds I came across:
Teva Omnium Sandal (Little Kid/Big Kid) for $28.98 (they have boy colors)
Robeez Soft Soles Kids’ Sneaker for $11
Here are all Kids Shoes 45% off sorted from price low to high. You can also sort by brand. I even saw some shoes that would be great for back to school.