Louis Vuitton is one of the biggest names in fashion, known for its luxurious bags that can be quite expensive. According to luxury reseller myGEMMA, they can cost between $1,200 and $36,000.

Having sales is a classic price discrimination strategy--the shoppers who love a dress so much that they won't risk losing it, or can't wait to wear it, pay full price. Those who care less, have less ...