tiergain
Repeat purchase bundle upgrades for supplements in 2026
First order: single bottle at $34. Second: 2-product starter stack at $59. Third: complete goal stack at $85. Each reorder grows the stack.
150%
AOV growth from 1st to 4th order with stack progression
3.4x
LTV from stack-upgraded supplement customers
$85
Average 4th-order AOV with stack progression
Supplement customers already add products over time. The stack upgrade path just accelerates that natural expansion from months to weeks.
The hacks
Goal-based upgrade suggestions on repeat visits
Energy stack buyer on 3rd visit: "Add CoQ10 to your energy stack for $22. 67% of energy stack users report better afternoon energy with CoQ10." Goal-specific data drives the upgrade.
Single-to-stack upgrade on second supplement order
First: protein ($34). Second: "Start the recovery stack - add BCAA ($59, save 13%)." Third: "Complete the stack - add creatine ($79, save 17%)." Fourth: "Go all-in ($85, save 20%)." Tiergain structures progressive stack expansion.
Supply duration upgrade on supplement reorders
First order: 30-day supply. Second: "Switch to 60-day and save 9%." Third: "Go to 90-day and save 17% + free shipping." The supply upgrade grows AOV on the same stack. Tiergain handles supply-tier progression.
Free trial-size of next stack product with every reorder
Include a different trial-size in every delivery. 38% add the full-size on the next order. Over 6 months, the stack grows from 2 to 5 products through trial introductions.
Escalating loyalty discount on growing stacks
Month 1-3: 12% off. Month 4-6: 15% off. Month 7+: 18% off. The escalating discount rewards both loyalty AND stack growth. Leaving means losing the earned discount.
Auto-ship subscription after stack reaches 3+ products
When the stack hits 3 products: "Your stack is dialed in. Auto-ship monthly at 15% off?" Customers with 3-product stacks have proven their commitment. The subscription just automates the reorder.
Every supplement reorder should introduce one new product
The upgrade path is not about selling more of the same. It is about growing the stack by one product per reorder cycle. Single bottle -> 2-product starter -> 3-product stack -> complete goal stack. Guide the progression.