Looking for a wedding dress online? Knock Off Nightmares, is a Facebook page you might want to check first. It's filled with horror stories of shoppers who purchased dresses online only to find the gowns were nothing like the ones they saw on the site. Candace, a Bridal gown shopper thought she had found the perfect wedding gown, but it cost $4,000. "It was the budget of my entire wedding," she said. Then she found the same dress for just $300. When it came, she was shocked to see a cheap knockoff.