About every month or so, JCPenney.com offers a coupon for $10/$10+ purchase. Last time, I was able to get 6 pairs of shoes for the girls (separate transactions) for less than $10 total.
The best way to use this deal is to do a little bit of shoe shopping. They always offer free shipping and if you search through the clearance/sale areas there are many deals to be found. Its taking everything in my power to not go crazy shoe shopping, especially when they have $29.99 ($19.99 after the discount) Chuck Taylors! Those usually run around $40 at least!
How to use the code: just enter GO4TEN at checkout and it will deduct the $10 from your order. This offer is valid until Sept. 28th.
The rest of the site has $4.99 shipping, which isn't bad either. If anything does not fit right, it is super easy to make returns at the store.
Additional savings can be found if you order through Ebates or Shop-at-home, where you get an additional percent back from your order (each website offers 3% back). It probably wont amount to much, but I guess every penny counts.