Low AOV: How Free Shipping Bars Lift Order Value 15-30%

A free shipping threshold is the single highest-leverage AOV lever in ecommerce. Studies from Shopify, Baymard, and ConversionXL all converge on the same range: a well-set free shipping threshold lifts AOV by 15–30%, often by more on impulse-purchase categories.

How to set the threshold

The right number isn't your gut feel - it's a calculation:

1. Pull your last 90 days of orders. Find the average order value (AOV).
2. Set the threshold at 1.3× to 1.5× AOV. So if AOV is $48, set free shipping at $65.
3. Re-check margin: subtract shipping cost and discount cost from the marginal order value. It should still be net positive.
4. Run for 4–6 weeks. Compare AOV and total revenue, not just shipping cost.

How to display it in Flexibar

The most effective free-shipping bar is dynamic - it tells the shopper how close they are.

• "Free shipping over $75."
• "Free shipping over $75 - you're $12 away." (referencing cart)
• "You unlocked free shipping." (when threshold met)

Flexibar's free shipping bar handles all three states automatically using cart placeholders.

Setup walkthrough

1. Create a new bar and pick the Free Shipping template.
2. Set the threshold to match what you've configured in Shopify Shipping settings.
3. Pick the three message variants for empty cart, progress, and unlocked states.
4. Optional: change the bar color when unlocked (green is conventional and works).

Other AOV-lifting bar types

• Buy more save more: "Buy 2, get 10% off · Buy 3, get 20%."
• Gift threshold: "Spend $100 and we'll add a free [gift]."
• Bundle nudge: "Add a matching X to save 15%."

Common mistakes

• Setting the threshold too low - you give shipping away on orders that would have hit anyway.
• Setting it too high - shoppers abandon when the gap feels insurmountable.
• Forgetting to update Shopify's actual shipping rules to match the bar.