The creators of Knock Off Nightmares warn on their Facebook page, "there are no online sites that show stock designer photos at a fraction of the real price that we ever would recommend. You are not getting the dress in the photo, you are getting their knock off version — which can vary from 'ok, I can get away with this' to 'not on my worst day would I wear this.'"
What's worse, site owners often falsify testimonials to make their products look better. According to Knock Off Nightmares, "You never know what you are going to get because testimonials can not be trusted; site designers add the testimonials, so they can add what ever they want. Some people actually have decent experiences and that is great, but most people don't."