This is a consignment store. That being said, you cannot walk in with pictures of what you want and expect them to have it. Some brides find beautiful gowns for way less than they would have spent elsewhere, and some brides find nothing.
I went to this shop with my mom, MOH and MIL, and we had good fun. There was one single dress that I could even consider for myself, but it was more than twice my budget. Regardless, I found the staff to be knowledgable and very good, and was so impressed by the boutique itself. It had large fitting rooms with double access for the bride and the attendant and the entourage area was spacious and had plenty of mirrors.
This is going to be hit-or-miss, so if you have a really long engagement and time to wait around, it could be worth going a few times to see what new stock is available. One of the staff also offered to contact me if they got anything new in that she thought I might like.
Good experience, unimpressed with the stock this time.