Magento Open Source, 1.9.x
Buy X Get Y Free

This example shows how to set up a shopping cart price rule for a “Buy X, Get Y Free” promotion. The format of the discount is as follows:

  • Buy X quantity of product, get Y quantity for free.

Examples

Buy X Get Y Free is processed as a single action, with a “row total” dependency. All items must be from the same SKU to qualify for the promotion. For example:

  • Buy X quantity of product from category A, get Y quantity of the same product for free.

To limit the free product to categories A, B, and C, set the action as follows:

  • If ALL of these conditions are TRUE:
    Category is one of A, B, C

To limit the free items from any category A, B, C and receive Y from SKUs D123, E123, F123, set the action as follows:

  • If ALL of these conditions are TRUE:
    SKU is one of D123, E123, F123

Use the following formula to determine the correct value for the Maximum Qty Discount:

  • Formula = (X+Y) * (M/Y)
    Where
    X = number of items purchased
    Y = number of free items
    M = Maximum number of free items allowed

For example:

  • Buy 5 Get 2 Free with maximum of 4 free items allowed.
    Where
    X = 5
    Y = 2
    M = 4
    Maximum Qty Discount = (5+2)*(4/2)=(7)*(2)=14
  • Buy 5 Get 3 Free with maximum of 9 free items allowed.
    Where
    X = 5
    Y = 3
    M = 9
    Maximum Qty Discount = (5+3)*(9/3)=24
  • Buy 20 Get 2 Free with maximum of 20 free items allowed.
    Where
    X = 20
    Y = 2
    M = 20
    Maximum Qty Discount = (20+2)*(20/2)=(22)*(10)=220