Kmart has shoes right now B1G1 for $1.00. And it is working on shoes marked as clearance price. Lots of boots, slippers, and some shoes that you would not wear in the summer.
B1G1 – sale details — Discount applied in shopping cart. Offer good on shoes sold by Kmart. BOGO $1 applied to item of equal or lesser value. No promo code required. Offer cannot be combined with any other offer. Excludes Gift Cards, Hot Buys, and Everyday Great Price items. Additional exclusions may apply.
YMMV (your mileage may vary) on what is available for free store pickup at your store. It might be easier to shop in the store. For these links below you can try to narrow down by clicking the “in store” tab at the top of the website. Again this will not be easy to find certain sizes so I would look for shoes for my kids they might fit into later if their size was sold out.
Search Low to High Price
Search 70% OFF or more + B1G1 $1
Search 50% OFF or more + B1G1 $1
Search 20% OFF or more + B1G1 $1
Some items might be sold out for sizes so you might need some more options to get the $1 one.
Go here for Clearance shoes 20% off or more.
If you need delivery there is less to choose from. Look here to see if you can find the right sizes on clearance B1G1 $1 shoes available for shipping.