Increasing average order value can be done with a bonus product offer that automatically adds a reward when customers meet specific conditions at checkout, such as purchasing selected products or reaching a set cart total. Use cart price rules to define triggers and assign complimentary items, set limits per customer, and schedule offers for promotions. Ensure free or bonus items appear clearly in cart and checkout so shoppers see the benefit. Combining this with tiered rewards, product bundles, and targeted incentives based on customer segments helps make the offer feel relevant and encourages higher spending without friction in the purchase flow.