I also have been using snowflake, they sell on ebay, which means you can pay with Paypal, their shipping rates are great. Good suits with good service. Ebay is the way to go, you can find any brand.
The only other one I use is in Canada,
www.jagwear.ca, we love it because you can design your own suits on their interactive website, my girls love to do that! Prices are both Canadian and US dollars.