There are key benefits to using Gift With Purchase (GWP) offers in your sales strategy. First, GWP offers inspire brand loyalty when word spreads about your free gifts. Second, you can use GWP offers to manage your inventory (buy X get Y). Finally, GWP inspires your customers to spend more which increases your AOV.

Rebuy's free gifts functionality allows businesses to align promotional strategies with rules based on cart value, products, or combinations. It becomes even more effective when combined with Rebuy's Smart Cart V2.

With the Gift With Purchase (GWP) widget, Rebuy makes it easy to create GWP campaigns that help you boost sales on BFCM and beyond. For example, when a GWP offer is accepted Rebuy automatically adds the gift to the cart for instant satisfaction. Because your customer doesn't have to search around to add the gift item themselves, you save them time.

Create a new widget as shown below in Rebuy Admin.

In the General setting of the widget editor you will see Data Source. Click the "edit" link to open the connected Data Source Rule Builder that has been created for this widget.

An example of how this is used is saying: IF Cart Subtotal is GREATER THAN X amount of $ RETURN Free Item. You can also say IF Cart Subtotal is GREATER THAN X amount of $ AND/OR Products/Collections CONTAINS/ CONTAINS ANY (etc) RETURN Free Item. When setting up conditions for free gifts, be cautious with OR statements. Ensure each "OR" block includes all applicable conditions such as cart subtotal. For example, use "Cart Subtotal >= $50 OR Cart Subtotal >= $100" rather than "Country = US OR Cart Subtotal >= $50" which can create ambiguous configurations. For product-specific inclusions, "Products Contains Any" is recommended over "If Product Equals" as it ensures the free gift adds regardless of whether the specific product is the sole item or part of a larger cart.

Rebuy now supports product discounting using Shopify Functions directly within the GWP widget's settings. To enable the discounting of products both in the widget and throughout the customer's cart and checkout experience, simply toggle on the "Use Shopify Functions (Recommended)" option below and input the specific discount you are looking to apply to the gift product(s) offered via the GWP widget. You can configure a "Fixed" discount, or "Percentage" based discount using this feature.

NOTE: If you only want to show a "visual" discount (i.e., Rebuy will display the discount in the widget, but will not apply the discount once the products are added to the cart), toggle off the Shopify Functions setting.

To install the widget, click the Install link located in the top right of the widget editor header. A new window will open with specific instructions for you to follow to complete the install process. These instructions may include copying and pasting code, configuring settings, or other steps. It is important to follow these instructions carefully to ensure a successful installation.

Need more help?

Since there is no visual aspect to the Gift With Purchase Widget, no editing of the layout is required.

We've recently updated the Gift With Purchase (GWP) widget settings, impacting how gifts are managed in carts:

To adjust these settings, navigate to:

Gift With Purchase Widget's Settings -> General Tab -> GIFTS WITHOUT PURCHASE.

The widget allows the option to hide the quantity selectors on all items added from this widget. This requires the use of Rebuy Smart Cart also, the quantity selectors will not be hidden in theme carts.

To adjust this settings, navigate to:

Gift With Purchase Widget's Settings -> General Tab -> Quantity Selectors

When editing the data source, it is best to set the time period for the specific sale. This way you don't have to lift a finger when the sale period launches.

To prevent discounts from being cached when a customer has added a product to their cart via a Rebuy widget (such as manually through a Product Page widget or automatically via a Gift With Purchase widget), you will need to ensure that the Shopify Functions Discount is set to "None" in the widget's settings once your promotion has ended:

Why does this happen?
Rebuy's Shopify Functions-generated discounts are attribution-based. If the product line item in the customer's cart still contains the Rebuy widget attribution data (even after the widget is disabled), the discount configured in the widget's settings will still apply.

Rebuy's Gift With Purchase (GWP) validation logic runs during the Shopify checkout process to keep free gifts honest. A background process called the GWP watcher monitors the cart at checkout, re-evaluates your GWP widget's Data Source rules, and automatically removes any gift that no longer qualifies. This prevents a customer from adding qualifying items to unlock a gift, then removing those items before paying while keeping the gift for free.

When a customer reaches checkout, the GWP watcher re-checks whether the cart still meets the Data Source rules for each active GWP widget, then decides whether to keep or remove the gift:

Removing a gift whose free status was overridden protects the customer from being charged full price for an item they expected to receive for free. Because Shopify does not let customers remove items during checkout, this automatic removal is the only way to prevent that unexpected charge.

For GWP validation to run at checkout, and to run correctly, the following requirements and limitations apply:

When your store uses Shopify Markets with fixed market prices (rather than dynamic currency conversion), the GWP watcher may incorrectly remove gifts at checkout for customers shopping in a non-default currency. This happens because Shopify does not expose currency conversion rates at checkout, so the watcher's threshold calculation uses the wrong value.

Workaround: If your store uses Shopify Markets with fixed pricing across multiple currencies, test your GWP threshold behavior in each currency where you have fixed prices. Consider setting thresholds that account for this discrepancy, or use dynamic (non-fixed) pricing where GWP promotions are active.

This issue typically arises due to a rule configuration using "Product equals" instead of "contains any." Update the data source configuration to use "contains any" for stable functionality.

Ensure that the GWP product is active, published, and properly configured in Shopify. Inactive or unpublished products will not be added to the cart.

This may be due to the widget not being properly installed. Check the installation step in the widget settings to confirm the setup is complete.

No, a Shopify Plus plan is NOT required, as you can use Shopify Functions directly within the Widget's settings to enable a product discount for the free gift. The Shopify Functions discounting feature in the Widget settings is now available to all Shopify plans.

A discount code can trigger a Gift With Purchase (GWP) in Rebuy by pairing a GWP widget with the IF Discount Code Rule. Set the IF rule to Discount Code, choose Equals or Contains, enter the code, and set the RETURN to a Specific Product. When the shopper applies the code in the Smart Cart discount field, the rule fires and the gift is added to the cart. The code must be valid in Shopify independently of the gift, so it cannot be a Buy X Get Y code scoped to the gift product, because that code will not validate until the gift is already in the cart. The rule reads only manually entered codes, and it is not supported on Post Purchase Offer widgets. For the full rule reference, see Discount Codes as a Condition Input for Data Sources.

This is typically caused by not using the Storefront API. The deprecated discounting method doesn't automatically remove products from the cart when they no longer qualify for the discount (e.g., a free gift). To resolve this, enable the Storefront API for real-time discount validation and automatic cart adjustment.

While technically possible, using both tools simultaneously for the same promotion can lead to conflicts such as duplicate gifts being added to a customer's cart. For best results, choose the tool that best aligns with your promotional strategy and disable the other for that specific promotion.

At this time, Subscription products are not supported for GWP.

The "Selectable Gift With Purchase" widget is not a standard Rebuy widget (it is a customized version of a Cart Cross-sell widget), therefore additional custom code is required to ensure proper functionality. Refer to our on guide on custom implementation for this widget type: Selectable Gift-With-Purchase Widgets

If the INPUT product is the same as the OUTPUT product for your GWP Data Source (for a Buy One, Get One promotion), your "IF" statement must use a "Product" -> "Contains Any" rule. Although this is a cart-based workflow, a product specific rule is required in this scenario.

If you wish to have the GWP widget triggered when a specific tagged product is added to cart, your Data Source rule's IF statement must use a "Contains Any" INPUT statement. Although this is a cart-based workflow, a product specific rule is required in this scenario.

Once the GWP widget is disabled no new customers will receive any gifts from that widget. However there may be customers who already had a gift added to their cart prior to the widget being disabled. Those items will not be removed from their cart when the widget is disabled.

Example: Customer A correctly receives a GWP item at 12:00pm. The widget is disabled at 12:05pm. Customer B begins shopping at 12:07pm and would not receive any items from the widget. Customer A would keep the item they received unless they manually remove it. This means it is expected that you may see orders containing items from disabled widgets. It is from shoppers that already had the item prior to the widget being disabled and are completing their checkout. The orders are not from new customers continuing to access the disabled widget.

This typically occurs when the Shopify Functions setting in your widget is not properly toggled on. Navigate to your widget settings and ensure Shopify Functions is enabled to apply the discount automatically.

Revisit your data source rules and ensure all cart conditions are properly set under each logical "OR" or "AND" statement. Adding a cart subtotal condition into every OR block often resolves conflicting setups that may prevent free gifts from being applied correctly.

For this scenario, we recommend using an Advanced UTM rule by following the steps in following guide: URL/UTM Based Rules

Essentially, you will need to ensure there is a specific UTM that can be keyed off of for your particular GWP campaign. For example, if you use a URL Contains rule that starts with utm_source= , utm_medium= , utm_campaign=, utm_content= it should work as expected, and the GWP won't disappear when the customer navigates away to a different page on the site.

Yes, Rebuy's GWP validation logic can run during the Shopify checkout process to monitor cart conditions and automatically remove gifts if a customer no longer qualifies. This feature is available on Shopify Plus only and requires at least one active checkout widget on the checkout page. For full details on requirements, limitations, and how auto-removal works, see the GWP Validation at Checkout section above.

Checkout offer (recommendation) widgets include a Treat as Gift With Purchase setting in their Advanced Settings tab. When enabled, the GWP watcher validates that widget's items exactly as it would a standard GWP widget — removing the gift if cart conditions are no longer met. This requires both Enable Attribution Tracking and Enable Widget Tracking to be on — without Widget Tracking, the watcher cannot identify the item and will not validate or remove it — and is available to Shopify Plus merchants. For full setup steps, see Checkout Extensions Installation and Settings.

Rebuy automatically removes a GWP product at checkout when a discount code, an automatic discount, or any other discount that isn't combinable with the gift's discount causes that GWP item to lose its free status — but only when the GWP watcher's own requirements are met. This runs through the same GWP watcher logic described in the GWP Validation at Checkout section, and it has the same requirements: Shopify Plus and at least one active checkout widget.

If those requirements are not met, the GWP watcher does not run, so the gift item itself is not automatically removed — but its discount is still lost, since discount combinability is controlled by your store's discount configuration rather than by the GWP watcher. In that case, the customer keeps the gift item in their cart, but they are charged full price for it.