Shadow Checkout: Advanced B2B Checkout Without Plus
9/10
Demand Score
B2B deals are blocked by missing checkout fields and flows that standard plans cannot modify—leading to lost revenue or forced upgrades.
8/10
Blue Ocean
Competition Level
$199-799
Price/Month
Predicted customer spend
12 days
Time to MVP
Difficulty: Expert
The Problem
Checkout and Customization Limitations
Competitor Landscape
- Native Checkout Extensibility (often Plus-restricted)
- Rebuy Smart Cart
- CartHook/Rally
- Bolt
Must-Have Features for MVP
Pre-checkout microfrontend with schema-driven fields
Tokenized payment capture and deferred settlement
PO/attachments capture mapped to order metafields
Multi-ship-to compiler (split into multiple orders)
Surcharges/fees and tax handling compliant with invoices
A/B and holdout groups with analytics
Graceful fallback to native checkout
Fraud rules integration and risk scoring
Performance budget (<150KB JS) to preserve speed
⚠️ Potential Challenges
- PCI scope and payment gateway compatibility
- Edge cases when compiling multi-ship orders
- Shop Pay and accelerated wallets handoff constraints
- Shipping/tax estimations before official checkout
- Fraud screening alignment with platform tools
Risk Level: High
🎯 Keys to Success
- Measurable conversion and AOV lift
- Zero raw card data touches (SAQ A)
- Seamless compatibility with native checkout and wallets
- Clear playbooks for shipping/tax reconciliation post-order
Ready to Build This?
This expert-difficulty project could be your next micro-SaaS success.