If an item is part of the Buy 2 Get 1 promotion you'll see the promotional sale notated on the item's store page next to the cover.
Please note: We run several Buy 2 Get 1 promotion at a time. All three titles must be notated with the same sale in order to receive one item free. You are welcome to have as many promotional items in the cart as long as they are in increments of three for the sale to apply to multiple titles.
When the items are in your shopping cart there will be a red dollar sign next to each title that is eligible, and a discount will be taken out of each item to total the cost of one.