There are some online consignment shops that sell gently used kids' shoes. Shoes that are well worn have taken on the imprint of the foot and are not suitable for re-use. Shoes that are barely worn, often the case with dress shoes, do not present this problem. Check out eBay.com as well as http://143kids.com AND www.cheapkidsclothes.com/
You can sell used children shoes online, depending on the brand and the condition of the shoe, you can make money by selling your shoe online. You can try craigslist or ebay where you can find sellers quickly.
I would like to take a little vacation and since I am starting my own shoe business I was wondering if there is a childrens shoe factory in the US that does public touring so I can incorporate it into my vacation? More