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E-Commerce · head to head

Authorize.net vs Inventory Lab

Authorize.net logo

Authorize.net

E-Commerce

We help make it easy to get paid

From
$25/month
Rated
-
Full reviewWebsite
Inventory Lab logo

Inventory Lab

E-Commerce

FBA inventory management made simple

From
Free
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: Authorize.net all-in-One plan charges 2.9% + 30¢ per card transaction, higher than Gateway-only rate of 10¢ + batch fee; 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
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Authorize.net and Inventory Lab actually diverge.

Attributes where Authorize.net and Inventory Lab differ
AttributeAuthorize.netInventory Lab
Starting price$25/monthFree
Free tierNoYes
FoundedUnknown2011

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 Authorize.net

Nothing recorded that Inventory Lab does not also cover.

Only in Inventory Lab

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

What people use each for

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

Authorize.net

  • E-commerce payment processingnot Inventory Lab
  • Recurring billing and subscription managementnot Inventory Lab
  • Multi-channel payment acceptancenot Inventory Lab

Inventory Lab

  • Amazon seller managementnot Authorize.net
  • multi-channel resellingnot Authorize.net
  • inventory trackingnot Authorize.net

Where each one falls short

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

Authorize.net

  • All-in-One plan charges 2.9% + 30¢ per card transaction, higher than Gateway-only rate of 10¢ + batch fee
  • Gateway + eCheck plan limited to U.S.-based businesses only
  • eCheck processing includes $10 minimum monthly fee on Gateway + eCheck plan
  • Chargeback fees apply: $0 for standard processing but $25 for eCheck chargebacks

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

Pricing, plan by plan

Authorize.net

$25/month
  • All-in-One$25/month
    • Merchant account and payment gateway
    • Transaction rate 2.9% + 30¢ per transaction
    • Multiple payment types (cards, Apple Pay, Google Pay)
  • Gateway Only$25/month
    • Payment gateway only
    • For existing merchant account holders
    • Transaction rate 10¢ per transaction + 10¢ daily batch fee
  • Gateway + eCheck$25/month
    • Payment gateway with eCheck support
    • eCheck rate 0.75% per transaction
    • Credit card rate 10¢ per transaction + 10¢ daily batch fee

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

Which should you pick?

Choose Authorize.net if

Nothing in the data separates Authorize.net from Inventory Lab on the points above - pick on price and on how each one feels to use.

Authorize.net review

Choose Inventory Lab if

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

Questions people ask

Is Authorize.net or Inventory Lab better?
Neither clearly leads. Authorize.net starts at $25/month and Inventory Lab at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Authorize.net or Inventory Lab?
Inventory Lab has a free tier; the other does not. Paid plans start at $25/month for Authorize.net and Free for Inventory Lab.
Does Authorize.net or Inventory Lab 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. Authorize.net starts at $25/month.
What is Authorize.net best used for?
Authorize.net is most often used for e-commerce payment processing, recurring billing and subscription management, multi-channel payment acceptance. Of those, e-commerce payment processing and recurring billing and subscription management are not what Inventory Lab is typically brought in for.
What can Authorize.net do that Inventory Lab cannot?
Inventory Lab covers FBA inventory tracking, Repricing automation, Price monitoring, Sales analytics.

Answered from the vendors’ own pages

Authorize.net: How much does Authorize.net cost?

Authorize.net charges a $25/month gateway fee across all plans. Transaction rates vary: All-in-One plan charges 2.9% + 30¢ per card transaction, Gateway-only plan charges 10¢ per transaction + 10¢ daily batch fee, and Gateway + eCheck charges 0.75% for eCheck or 10¢ + 10¢ batch for credit cards.

Source
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
Authorize.net: Are there any setup or termination fees?

No setup fee or early termination fee applies to any Authorize.net plan. You can cancel your account without penalty once service usage stops.

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
Authorize.net: What are the additional fees beyond the monthly gateway charge?

Beyond the $25/month fee, additional charges include Account Updater service at $0.25 per update, standard chargeback fees at $0 (but $25 for eCheck chargebacks), and returned item fee of $3 for eCheck payments. eCheck processing includes a $10 minimum monthly fee.

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
Authorize.net: What payment types does Authorize.net accept?

Authorize.net accepts credit cards, Apple Pay, Google Pay, and eCheck payments (Gateway + eCheck plan and higher). All plans include automated recurring billing, customer information manager, digital invoicing, and advanced fraud detection.

Source
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