A Buy One, Get One (BOGO) Discount gives your client an item or items at a discount when they purchase another item or items. For example, "Buy an 11x14, get a 4x6 for free" or "Buy a canvas, get three 5x7s for free"
BOGO Discounts can be Automatic, or Promo Code based. Automatic discounts apply to all eligible items in a cart automatically, while Promo Code discounts require that the client enter a Promo Code in the cart or at checkout in order to receive the discount.