Dresses

I had wanted my girls to get their dresses from Azazie, but my sister and sister-in-law have complained to my mother about buying dresses online. My mom agrees with them that it isn't a good idea. I have seen a ton of positive reviews though. I tried telling them that they have the option to try dresses on at home, but they don't want to do that because it isn't free. They want to be able to go to a store and try on as many dresses as possible without having to pay a fee. They are both rather indecisive. I'm not a fan of David's Bridal especially because I've heard numerous horror stories. A local bouquet wouldn't work either because I have bridesmaids in different states. I'm not sure what to do. Any advice?