ecomrestack

battles / Marketplaces

InventoryLab vs Sello

InventoryLab ($49/mo/mo, vibe code 4/10) vs Sello ($150/mo/mo, vibe code 4/10). Sello is the easier one to rebuild yourself — here is what you lose either way.

InventoryLab
KEEP

Marketplaces

$49/mo/mo

Vibe code4/10
Moat4/10
MVP
3 weeks
Full replacement
6-12 months, due to Amazon SP-API developer audits, PII restrictions, and inbound shipment edge cases
get the build prompt →
Sello
KEEP

Marketplaces

$150/mo/mo

Vibe code4/10
Moat4/10
MVP
3 weeks
Full replacement
12-18 months, due to continuous API changes across dozens of European marketplaces

easier to rebuild

get the build prompt →

price gap / year

$1,212/mo

running both / year

$2,388/mo

our call

Start with Sello — highest vibe code, weakest moat.

InventoryLab

InventoryLab is essentially a workflow wrapper around Amazon's Selling Partner API (SP-API). While building a local profit and COGS tracker is simple, getting Amazon's required security clearance (Data Protection Policy audit) and handling multi-destination FBA shipment splits programmatically will cost thousands in developer hours.

you can rebuild

  • FIFO Cost of Goods Sold (COGS) tracking and inventory valuation engine
  • Net profit and loss dashboards filtering by SKU, category, and date range
  • Supplier performance reporting and batch ROI calculations
  • Basic thermal label generation and printing helper routines
  • Manual business expense and mileage logging

what you lose

  • Scoutify mobile sourcing application for real-time barcode scanning and rank lookup
  • Pre-approved Amazon SP-API enterprise access with restricted data permissions
  • Automated 2D barcode generation matching Amazon FBA box content specifications
  • Real-time handling of split FBA inbound shipments across multiple fulfillment centers
  • Direct browser-to-thermal printer integration without print dialog prompts

real moats

  • Amazon SP-API developer registration approval and Data Protection Policy compliance
  • Deep workflow optimization for high-volume physical batch packing and prep
  • Historical accounting and cost-basis data lock-in over multiple tax years

open source escape hatches

Sello

Syncing inventory to one single marketplace via custom code is straightforward. However, maintaining dozens of custom API adapters for regional European channels with shifting taxonomies and auth specs is an unmaintainable sink of dev time.

you can rebuild

  • Single-store inventory sync logic
  • Order importing into core store backend
  • Basic CSV/XML product feed generation
  • Centralized order status view
  • Channel-specific price markup rules

what you lose

  • Pre-built integrations with 20+ Nordic/European marketplaces
  • Automated channel taxonomy category mapping
  • Managed API token refresh cycles and rate-limit handling
  • Pre-submission field validation against marketplace schemas
  • Ongoing API maintenance when regional marketplaces update specs

real moats

  • Maintained integrations across fast-changing regional marketplace APIs
  • Pre-mapped category taxonomies across disparate sales channels
  • Channel developer relationships and early API access

open source escape hatches

Questions people ask

Which is easier to rebuild with AI, InventoryLab or Sello?

Sello. It scores 4/10 on vibe code with a moat of 4/10, so an AI-assisted MVP takes about 3 weeks and a full replacement about 12-18 months, due to continuous API changes across dozens of European marketplaces.

Which one costs less, InventoryLab or Sello?

InventoryLab at $49/mo/mo for a typical mid-market store. The gap between the two is about $1,212/mo a year.

What do I lose if I replace InventoryLab?

Scoutify mobile sourcing application for real-time barcode scanning and rank lookup Pre-approved Amazon SP-API enterprise access with restricted data permissions Automated 2D barcode generation matching Amazon FBA box content specifications

What do I lose if I replace Sello?

Pre-built integrations with 20+ Nordic/European marketplaces Automated channel taxonomy category mapping Managed API token refresh cycles and rate-limit handling

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