I asked 3 of my friends to be my bridesmaids shortly after getting engaged, they all agreed. 2 of them will be coming in from out of state and they don't seem to have any problems with where I've asked them to choose their dresses from. But the one BM that lives close by and doesn't have to travel more than 20 minutes wants to "borrow" my swatches and go to JC Penny and buy a prom dress while they are on sale. I first asked them about some styles at David's Bridal but she said it was too expensive, so I found some place cheaper and with a better selection of styles in the color I want. They have numerous dress for $100 which seams reasonable to me and my other bridesmaids. I am letting them each choose their own style and length because I don't want them stuck with a dress they can only wear once, I'm also not being picky about their shoes or accessories.
Continuing in comments...