Shopify Upsell App Pricing: Usage vs Flat Monthly (2026)

Upsell app pricing models fall into three buckets: percentage of upsell revenue, percentage of total store GMV, and flat monthly subscriptions. For consumables DTC, the right choice depends on upsell volume and how many surfaces you need.

When usage-based Starter wins

• You're testing post-purchase for the first time
• Upsell GMV is under ~$600/mo (5% ≈ $30)
• You only need one post-purchase funnel

When flat Growth or Pro wins

• Upsell revenue is predictable and growing
• You want cart, checkout, or thank-you surfaces
• You prefer predictable software COGS for forecasting

RefillPost plans at a glance

Starter: $0/mo + 5% on upsell revenue. Growth: $29/mo flat, post-purchase. Pro: $49/mo flat, up to 5 funnels across cart, checkout, post-purchase, and thank-you.