Congratulations on the planning! I had a very similar situation. I live in TX and my bridal party was in NY & PA (and already flew in for the bachelorette & bridal shower) so I certainly didn't want them to spend a ton of money on their dresses. I actually found a dress at a department store and then found it online for a little under $50. They all looked incredible and no one knew that they didn't spend a ton on them! All the bridesmaids were shocked and excited to know they didn't have to spend much (and they still loved them). Here is a pic of them and a link to Nextag where the Sangria line is all over the place. You have to look through the options but seeing these prices - it's worthwhile!
Hope that helps and good luck with the planning!
Since my bridesmaids are already spending a lot of money to attend my wedding host a shower, etc. I am trying to my best ability to limit their costs. I am looking for bridesmaids dresses for under $50.00. If I can find them for & 20.00 I will just buy them for them! Any suggestions? Hope to hear from you! Thanks!