I don t know much about baby clothing but from what I see it looks like its a great niche to get into, try growing your sales by selling on ebay.I do adult clothing on ebay best tip I can give you is to include lots of pictures in your listings. use mannequins and dress forms to get even better pictures and to display clothing throughout your store, I get mine from Amazon.com or MannequinHub.com. their email is Sales@MannequinHub.com.Hope this is helpful, Good Luck!!
Your main problem will not be the start up cost, it will be the price of your products. How are you going to compete with Wal-Mart? You buy something for $15 and sell it for $25. They make something for $1 and sell it for $7.99You have to lease a building, get 0 tax breaks, pay all your utilities, staff, advertising, the list goes on on. They have towns that pay them millions to open a store there. Any business that has to compete with a big box chain, that has a mart in its name, is in serious trouble.