Creating Buy X Get X Discounted Promotions for Complementary Products

Last updated
5th May 2025
Read time
8 mins

Cover image

Kitchenware retailers often struggle with a common challenge: customers purchasing individual items rather than complete sets. While a quality pot or pan can stand alone, customers achieve better cooking results and greater satisfaction with complete, matching sets. Promotions like "Buy a pot, get 50% off any pan" can effectively encourage customers to purchase complementary items that enhance their cooking experience.

Standard Shopify discounts don't support these cross-product promotions, but with the Sway Functions Generator, you can create sophisticated "Buy X Get X Discounted" rules that drive sales of complementary products.

The Business Case for Complementary Product Promotions

Higher Average Order Value
Customers add complementary items they might otherwise purchase elsewhere or skip entirely
Increased Customer Satisfaction
Complete cooking sets provide a better experience than individual pieces
Improved Product Education
Introduces customers to the benefits of using matching cookware
Higher Lifetime Value
Customers with complete sets are more invested in your brand ecosystem
Reduced Cart Abandonment
Compelling "add-on" discounts can convert browsers to buyers

Step-by-Step Implementation

1. Access the Discount Functions Section

Screenshot showing the Functions menu with Discount option highlighted

  1. From your Shopify admin, open the Sway Functions Generator app
  2. Click on "Functions" in the main navigation
  3. Select the "Discounts" tab

2. Create a New Buy X Get X Discounted Function

Screenshot showing the 'Create function' button and discount type selection

  1. Click "Create function"
  2. From the modal, select "Buy X Get X Discounted"
  3. You'll be taken to the function editor

3. Configure Basic Settings

Screenshot showing the basic discount configuration form

  1. Enter a descriptive campaign name (e.g., "Buy Pot Get Pan 50% Off")
  2. Select the discount class (typically "Automatic Discount")
  3. Set the qualifier behavior to "Discount if all qualify"

4. Define Your "Buy X" Products

Screenshot showing the buy products configuration

This is where you'll specify which products trigger the discount:

  1. Under "Buy X Products," select "Collection" as the qualifier type
  2. Choose your primary collection (e.g., "Pots")
  3. Set the minimum quantity requirement (typically 1)
  4. You can add price minimums if you want to exclude entry-level products

5. Configure Your "Get X" Products

Screenshot showing the get products configuration

Here's where you define which complementary products receive the discount:

  1. Under "Get X Products," select "Collection" as the selector type
  2. Choose your complementary collection (e.g., "Pans")
  3. Set the quantity eligible for discount (typically 1)
  4. Choose "Percentage Discount" and set the percentage (e.g., 50%)

6. Set Discount Application Rules

For complementary product promotions:

  1. Under "Discount Application," select "Apply to lowest priced eligible item"
  2. This ensures a predictable discount amount if multiple complementary items are in the cart

7. Configure Discount Settings

  1. For evergreen promotions, leave the end date open
  2. Consider setting a maximum discount amount to protect against extreme price differences

8. Save and Test

  1. Save your function
  2. Test thoroughly by adding various combinations of products from both collections

Advanced Configuration Options

Multi-Tier Complementary Sets

For more complex kitchenware sets:

  1. Create separate discount functions for different pairings:
    • Buy Pot, Get Pan 50% off
    • Buy Pan, Get Utensils 40% off
    • Buy Knife, Get Cutting Board 30% off
  2. Set these to be compatible with each other to encourage complete kitchen outfitting

Complete Collection Incentives

For customers building full collections:

  1. Create scaled discounts based on how many pieces they already have:
    • First complementary piece: 30% off
    • Second complementary piece: 40% off
    • Third+ complementary piece: 50% off
  2. Implement this using customer tags or cart attributes to track previous purchases

Limited-Time Deep Discounts

For promotional periods:

  1. Create time-limited versions of your complementary product discounts with deeper discounts
  2. For example: "This weekend only: Buy any pot, get a pan 70% off!"
  3. Use the discount settings to set appropriate start and end dates

Implementation Example: Cookware Set Completion

Screenshot showing cookware set completion example

Here's a real-world example from a premium kitchenware retailer:

  1. The Stainless Steel Collection:

    • Buy: Any stainless steel pot (minimum $89)
    • Get: Any stainless steel pan 50% off
    • Messaging: "Complete your stainless steel collection and save!"
  2. The Non-Stick Collection:

    • Buy: Any non-stick pan (minimum $59)
    • Get: Any non-stick pot 40% off
    • Messaging: "Perfect your non-stick cookware set!"
  3. The Chef's Collection:

    • Buy: Any chef's knife (minimum $79)
    • Get: Matching cutting board 30% off
    • Messaging: "The perfect pair for precision cutting!"

Merchandising Your Complementary Product Promotions

Screenshot showing complementary product merchandising

To maximize the effectiveness of your complementary product promotions:

  1. Create "Complete the Set" Collection Pages - Design pages that showcase complementary products together
  2. Use Paired Product Photography - Show the products being used together in lifestyle images
  3. Add Cross-Sell Blocks - On product pages, highlight which complementary items are eligible for discounts
  4. Create Bundle Visualization - Show the original and discounted prices when items are purchased together
  5. Email Remarketing - Target customers who purchased only one piece with offers on complementary items

Real Results: Kitchenware Retailer Case Study

A specialty kitchenware store implemented complementary product discounts with these results:

Measuring Success

To evaluate the effectiveness of your complementary product promotions, monitor these metrics:

Common Issues and Solutions

| Issue | Solution | |-------|----------| | Customers not adding complementary products | Improve visibility of the offer and add clearer messaging | | Discount applying to wrong products | Double-check collection assignments and test thoroughly | | Stock imbalances between primary and complementary items | Adjust inventory planning based on attachment rates | | Customers confused about which combinations qualify | Create visual "pair this with" indicators on product pages |

Next Steps

Ready to implement complementary product promotions for your kitchenware store? Start by:

  1. Identifying your most logical product pairings based on function and design
  2. Determining appropriate discount percentages based on your margins
  3. Creating your Buy X Get X Discounted function
  4. Developing marketing materials that showcase the benefits of complete sets
  5. Setting up product page cross-selling to highlight the available discounts

For personalized assistance with your complementary product strategy, book a consultation with our team.

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