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E-Commerce · head to head

Inventory Lab vs Medusa

Inventory Lab logo

Inventory Lab

E-Commerce

FBA inventory management made simple

From
Free
Rated
-
Full reviewWebsite
Medusa logo

Medusa

E-Commerce

Open source Shopify alternative

From
$29/month
Rated
-
Full reviewWebsite

The short version

  • Only Inventory Lab has a free tier, so it costs nothing to try first.
  • Each has a real cost: Inventory Lab inventoryLab is no longer sold standalone and is now bundled into Three Colts' Seller 365 plans starting at $69 per month for a single user, rising to $199 per month for the Pro tier; Medusa the managed cloud meters four separate resources: edge requests, emails, compute hours and database storage
  • They diverge on capability: Inventory Lab covers FBA inventory tracking, Medusa covers Open source.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Inventory Lab and Medusa actually diverge.

Attributes where Inventory Lab and Medusa differ
AttributeInventory LabMedusa
Starting priceFree$29/month
Free tierYesNo
Founded20112020

Identical on both: pricing model (subscription), platforms (Web), user rating (Not yet rated), category (E-Commerce).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Inventory Lab

  • FBA inventory tracking
  • Repricing automation
  • Price monitoring
  • Sales analytics
  • Profit calculations
  • Supplier management
  • Alerts and notifications
  • Forecasting tools

Only in Medusa

  • Open source
  • Modular architecture
  • Multi-region support
  • Plugin system
  • Admin dashboard
  • Order management
  • Inventory tracking
  • Payment integrations

What people use each for

The jobs each tool is most often brought in to do.

Inventory Lab

  • Amazon seller managementnot Medusa
  • multi-channel resellingnot Medusa
  • inventory trackingnot Medusa

Medusa

  • Building a custom ecommerce backend on an open source headless platformnot Inventory Lab
  • Running a self hosted or managed commerce API with a custom storefrontnot Inventory Lab

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Inventory Lab

  • InventoryLab is no longer sold standalone and is now bundled into Three Colts' Seller 365 plans starting at $69 per month for a single user, rising to $199 per month for the Pro tier
  • Multichannel listing requires the separate UniCon add-on, priced from $49 to $449 per month depending on tier

Medusa

  • The managed cloud meters four separate resources: edge requests, emails, compute hours and database storage
  • The Develop plan at $29 a month applies a hard limit of 1,000 emails, so it stops rather than bills
  • Compute hours are capped at 600 on Develop and 800 on Launch
  • Edge request overage is $0.3 per million and storage $0.5 per GB month above the plan allowance
  • Background workers and priority support require the Scale plan at $299 a month

Pricing, plan by plan

Inventory Lab

Free
  • Standard$69/month
    • access to 10 tools
    • 1 user account
    • designed for independent resellers
  • Teams$129/month
    • all 10 tools
    • up to 10 users
    • shared workflows and collaboration
  • Pro$199/month
    • all pro versions of 10 tools
    • up to 10 users
    • premium support under 30-minute response time
  • Enterprise$null/custom
    • more than 10 users
    • custom terms

Medusa

$29/month
  • Develop$29/month
    • Base cloud hosting
    • Commerce features included
    • No GMV-tax
  • Launch$99/month
    • Enhanced features
    • No GMV-tax
  • Scale$299/month
    • Advanced features
    • No GMV-tax
  • Enterprise$null/custom
    • Custom configuration

Which should you pick?

Choose Inventory Lab if

  • You need fba inventory tracking.
  • You want to start without paying.
  • You also want repricing automation.
Inventory Lab review

Choose Medusa if

  • You need open source.
  • You also want modular architecture.
Medusa review

Questions people ask

Is Inventory Lab or Medusa better?
Neither clearly leads. Inventory Lab starts at Free and Medusa at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Inventory Lab or Medusa?
Inventory Lab has a free tier; the other does not. Paid plans start at Free for Inventory Lab and $29/month for Medusa.
Does Inventory Lab or Medusa run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Inventory Lab for free?
Yes. Inventory Lab has a free tier, so you can try it without paying. Medusa starts at $29/month.
What is Inventory Lab best used for?
Inventory Lab is most often used for amazon seller management, multi-channel reselling, inventory tracking. Of those, amazon seller management and multi-channel reselling are not what Medusa is typically brought in for.
What can Inventory Lab do that Medusa cannot?
Inventory Lab covers FBA inventory tracking, Repricing automation, Price monitoring, Sales analytics. Medusa covers Open source, Modular architecture, Multi-region support, Plugin system.

Answered from the vendors’ own pages

Inventory Lab: What is the free trial period for Inventory Lab?

Inventory Lab offers a 14-day free trial, with bonus days awarded when connecting Amazon accounts.

Source
Medusa: What does Medusa charge for additional team members?

Additional seats on the Medusa Cloud development platform cost $30 per seat per month. Unlimited users can access the Medusa Admin Dashboard at no additional cost for commerce operations.

Source
Inventory Lab: Can I save money on Inventory Lab with annual billing?

Yes, annual billing saves money: Standard saves $48/year, Teams saves $120/year, and Pro saves $192/year compared to monthly billing.

Source
Medusa: Are there usage-based charges beyond the base Medusa plan price?

Yes. Beyond base plan costs, Medusa charges for edge request overages at $0.30 per 1M requests, email overages at $0.70 per 1,000 emails, data transfer at $0.125 per GB, and database storage at $0.50 per GB-month.

Source
Inventory Lab: Is there an add-on to use Inventory Lab on channels beyond Amazon?

Yes, the UniCon multichannel add-on is available starting at $49/month for expanding beyond Amazon.

Source
Medusa: Can I cancel my Medusa subscription at any time?

Yes, users can cancel their Medusa subscription anytime. Plans are billed monthly in advance, with flex usage charges from the previous month added to the next invoice.

Source
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