tiergain
Free shipping for supplement stores in 2026
Supplement AOV is $54. Free shipping at $79 means one more bottle. The threshold matches the natural stacking behavior customers already have.
61%
Of supplement shoppers add a bottle for free shipping
$79
Optimal threshold for supplement stores
26%
AOV lift with calibrated supplement threshold
Supplement customers already buy in stacks. Free shipping at the right threshold just gives them one more reason to add the next bottle.
The hacks
Set the supplement threshold at $79
Supplement AOV is $54. Threshold at $79. One more bottle ($25-34) closes the gap. Supplement shoppers already think in stacks, so adding one more feels natural.
Stack suggestion that closes the shipping gap
Cart has protein powder at $39. "Add a BCAA recovery for $28 and get free shipping." The stack logic makes the suggestion feel like advice, not an upsell.
Free shipping as the 2-bottle tier reward
Buy 1 bottle: full price + shipping. Buy 2: 10% off + free shipping. The double reward at 2 bottles makes the single bottle feel like the wrong choice. Tiergain combines discount + shipping in progressive tiers.
90-day supply bundle that auto-qualifies for free shipping
The 90-day supply at $85 automatically exceeds the $79 threshold. Tiergain structures the 90-day bundle so free shipping is built into the offer, not an extra calculation.
Free shipping progress in the cart with supplement suggestion
The progress bar shows "$25 away from free shipping" and below it, a single supplement at $28. The combination of progress + specific product converts 18% better than the bar alone.
Subscription orders always get free shipping
Subscribe to any supplement and shipping is always free, regardless of order size. This one perk drives 3.2x more subscription signups because the ongoing savings feel significant.
Match the threshold to one extra bottle
Supplement bottles are $25-39. Your threshold should be AOV + one bottle. If AOV is $54 and bottles are $29, set the threshold at $79. The gap should feel like exactly one more product, not a stretch.