Plan a small cross-sell test without harming checkout
Estimate additional contribution and watch for friction on the main purchase.
Choose a genuinely relevant add-on
Offer an item that fits the main purchase and explain any compatibility restriction. Place it where the buyer can accept or decline easily. Check whether it changes shipping costs.
Measure both purchases
If 30 add-ons yield $8 each, they add $240 before other costs. If the change loses six main orders worth $45 each, the net effect is a $30 decline before additional operating costs.
Choose a guardrail for the main flow
Monitor completed primary orders, support questions, and refunds. Keep the core action clear and stop the test if the offer creates a serious checkout problem.
Try a related tool
Compare revenue per advertising dollar with the return needed to cover ad spend. Enter net revenue and contribution margin before ads.
