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SK Billing SK Inventory SK Calendar SK Tickets SK Works SK Catalog SK Queue SK Upsell SK Notifications
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SK Upsell · Compare

Honest comparisons.
Where they win, we say so.

Against Rebuy and Linkello. Every number dated, verified, and sourced.

● pricing verified June 13, 2026

choose rebuy ifYou want drag-and-drop templates and Shopify App Store apps

Extensive templates, checkout extension drag-and-drop blocks, massive Shopify merchant footprint. You pay base plans plus 0.09% commission cuts.

choose linkello ifYou want simple flat volume-tiered blocks

Clean script installation, multi-platform support, flat pricing tiers that scale by monthly widget views. Recommendations are standard catalog lists.

choose sk upsell ifYou want margin sorting and zero commission cuts

Sorts by Expected Value (attach probability × gross profit margin) atomically. Zero transaction taxes, Zod rules validated in < 1ms, and flat suite pricing.

01

SK Upsell vs Rebuy

Rebuy is the powerhouse of Shopify upsells. The choice between Rebuy and SK Upsell is about checkout builder comfort vs commission taxes on your margins.

SK UpsellRebuy
Pricing ModelFlat in the Core SuiteNo seat counting, no overages, CRM + 8 more products includedBase subscription + commission cuts$299/mo base + 0.09% to 0.10% commission fee of generated upsell revenue
Decision EngineExpected Value (EV) sortingCalculates conversion likelihood × item margin to maximize gross profitSales volume & simple matchingSorts primarily by sales volume counts; ignores variable product margin rates
Fatigue LimitsStrict session decline suppressionAutomatically halts recommendations after 3 declines in a sessionUncapped pitchesKeeps presenting offers regardless of customer session click-backs
Price Delta CapsZod AST price ratio guardsGuarantees upsell items do not exceed customizable ratios of active cartSimple rulesetsRequires manual threshold setup per rule
Shopify CheckoutCustom React code/APIIntegration requires developer implementationBespoke Shopify App integrationFull drag-and-drop checkout page builder widgets built-in

Where Rebuy genuinely wins

  • Deep Shopify integration with pre-built drag-and-drop checkout widgets
  • Extensive library of pre-designed visual discount templates
  • Instant app installation from the Shopify App Store without writing code
  • Excellent choices if you have dedicated Shopify store managers without developers

Where SK Upsell wins

  • Zero commission cuts: you retain 100% of your generated revenue
  • Deterministic EV sorting maximizes bottom-line profit, not just GMV
  • Built-in fatigue guards prevent alienating customers with endless pitches
  • Peered suite: Upsell data connects directly to SK Catalog and SK Billing
02

SK Upsell vs Linkello

Linkello targets generic web shops with flat-rate traffic tiers. We compare how a structured, data-isolated engine stacks up against standard script widgets.

SK UpsellLinkello
Core PricingFlat Core Suite planUpsell + CRM + tickets + billing + catalog + works + inventory + calendarVolume-tiered flat rates$149/mo flat base; scales up to $399/mo if widget view traffic grows
Rule LogicZod validated AST JSONProposals compiled and executed under 1ms with type safetyGeneric matching criteriaJSON arrays evaluated client-side
Data TenancyPostgreSQL Row-Level SecurityComplete isolation of rules and recommendations on database levelApplication-level scopeRules separated by standard tenant ID filters in app logic
IntegrationAtomic platform peeringShared catalog and order records with zero API connector setupsWebhooks & JS tagsRequires custom webhook hooks and third-party connector scripts

Where Linkello genuinely wins

  • Plug-and-play tag integration on custom legacy CMS frameworks
  • A simple standalone dashboard focused solely on recommendation lists
  • Good choice for small static storefronts that do not use a unified billing or inventory backend

Where SK Upsell wins

  • No data leakage or cross-tenant query execution via strict Postgres RLS
  • Rules execute dynamically on checkout creation, minimizing network latency
  • Shared platform state: changes in SK Catalog are instantly visible to the matching engine
Methodology & sources. Verified June 13, 2026 from vendors' public documentation. Rebuy subscription rates verified at $299/mo base subscription + 0.09% commission of generated upsell revenue; Linkello pricing verified at $149/mo base volume tier scaling up based on widget load traffic. Vendors change pricing; spot something stale → compare@softknack.com. Next refresh: Sep 2026.