Hi Kids. You've got a lot of great suggestions here. I would not recommend moving your site to wordpress or GoDaddy because you have an excellent Google Page Rank 8/10.
Not only that, but you have over 6,000 links back to your site from other websites. http://www.google.com/#hl=en&source=hp&q=link%3A+http%3A%2F%2Fkidsclothingwholesalebargains.blogspot.com%2F&aq=f&aqi=g-p1g9&oq=&fp=25d2df88517031cf
Maintain the site you have currently with Blogger and then continue to push to your eBay store. I don't think you necessarily need a new store, its more about driving traffic to the variety of product you currently have on eBay. Focus your energy on the marketing versus the variety of stores you have online.
I recommend looking into Google Product and also listing on Craigslist (both free). And of course, posting on a variety of blogs and forums to get your name out there.