Amazon has crocs Toddler/Little Kid Mammoth Clog for $11.89. Shipping is $5 or free with prime or on orders of $25 or more. Also if you spend $80 or more on them, it will knock $20 off the price. That would make 7 pairs ~$64.
Product Features:
* Croslite and polyester
* Rubber sole
* Available in whole sizes and medium width only
* Ventilation ports increase breathability and filter water and debris away from the footbed
* Footbed conforms to foot, creating a custom fit
* Massaging nubs stimulate circulation
* The fleece lining causes these shoes to fit more snugly. Please order one size larger.
* Made in China
Amazon.com: crocs Toddler/Little Kid Mammoth Clog: Shoes
crocs Toddler/Little Kid Mammoth Clog $12 (FSSS Eligible) 
