How does Glass-Box stockout-adjusted velocity work?

Instead of dividing 30-day sales by 30 calendar days, ShelfSteady excludes days where the SKU had zero available stock so out-of-stock periods never artificially depress your reorder point. Clicking Inspect Math on any SKU shows every number in the formula.

Do our suppliers need a login or paid seat to confirm POs?

No. Each Purchase Order generates a secure zero-login Magic-Link (sent in 1 click by email or copied) where vendors confirm shipped quantities, ETD dates, and upload commercial PDF/PNG invoices.

Multi-Location Replenishment, Landed-Cost POs & 1-Level BOM Inside Shopify.

Q: How is ShelfSteady different from native Shopify Admin Purchase Orders?

Native Shopify Purchase Orders record basic incoming quantities without stockout-adjusted velocity math, landed-cost freight/duty allocation into InventoryItem.unitCost, zero-login supplier confirmation links, warehouse-to-POS Fill Shelves rebalancing, or 1-level bundle BOM tracking. ShelfSteady adds all five directly inside Shopify Admin and Web.

Q: Does ShelfSteady charge a percentage of GMV or order volume?

Never. ShelfSteady is 100% flat-rate ($49/mo Founding Cohort, $79/mo Starter, $149/mo Growth, $299/mo Scale) with a 14-day free trial—available via instant Web Workspace checkout or native Shopify App Billing.

Shopify sunset Stocky on August 31, 2026. Replace brittle spreadsheets and $500/mo external ERPs with glass-box stockout velocity, barcode receiving, zero-login vendor links, and POS shelf transfers—flat-rate with zero GMV tax.

14-day free trial • 1-click cancel $0 on Shopify Dev Stores Founding Cohort $49/mo (first 30 stores)

Glass-Box Replenishment Ledger

Shopify GraphQL 2026-10 • Live Sync

4 LOCATIONS

Merino Quarter-Zip — Navy / L 6.4d cover

In-Stock Pace

4.2 / day

Stockout Excl.

6 days

Suggested PO

+96 units

PO-1018 Landed Cost Sync InventoryItem.unitCost

Base $14.00 + Freight/Duty $1.85 → $15.42 blended

Holiday 3-Pack Bundle BOM 48 Kits Buildable

Everything Stocky Left Behind. Zero ERP Bloat.

30D / 90D BLENDED

Stockout-Adjusted Glass-Box Math

Automatically strips zero-inventory days out of 30-day velocity so bestsellers never under-order after a stockout. Click Inspect Math on any SKU to audit every input.

WEIGHTED COGS

Landed-Cost POs & Barcode Goods-In

Draft multi-line POs in 1 click, scan barcodes (+1) on the warehouse floor, auto-split short-shipped backorders, and push freight + customs duty into Shopify unitCost.

0 VENDOR LOGINS

Zero-Login Supplier Magic-Link Portal

Email POs directly from ShelfSteady or share a 30-day tokenized link. Vendors confirm shipped quantities, set ETD dates, and attach commercial invoices without creating accounts.

POS + KITS

Warehouse-to-POS Fill Shelves & 1-Level BOM

Spot retail POS stores with under 10 days of cover while your warehouse has surplus stock, and track component bottlenecks across multipacks and gift bundles in real time.

Calculate Your Annual ERP Savings

Compare flat-rate ShelfSteady tiers against legacy ERPs and GMV-taxed forecasting apps.

Current Inventory Workflow

Active Warehouse + POS Locations 3 locations

Tracked Physical SKUs 1,200 SKUs

Typical Legacy Monthly Cost $584/mo

Founding Cohort (or ShelfSteady Growth)

$49/mo 14-day free trial

Qualifies for $49/mo Founding Cohort rate lock (up to 5 locations & 2,500 SKUs)

Estimated Annual Savings $6,420/yr

Flat-Rate Pricing. Zero GMV Tax.

Start a 14-day free trial on the web or via native Shopify Admin Billing. Free on Development Stores.

Compare full plan quotas

Founding Cohort

First 30 Stores

$49/mo

Up to 5 Locations & 2,500 SKUs
60 Purchase Orders / month
Landed Cost & Vendor Magic-Links
Fill Shelves + 50 Kit BOMs

Starter

$79/mo

Up to 2 Locations & 500 SKUs
15 Purchase Orders / month
Stockout-Adjusted Velocity
Barcode Goods-In (+1 Scan)

Growth

Scale

$299/mo

Unlimited Locations & 3PLs
Up to 25,000 Tracked SKUs
Unlimited POs & Backorder Splits
Unlimited 1-Level Kit BOMs

Frequently Asked Questions

How is ShelfSteady different from native Shopify Admin Purchase Orders?

Native Shopify Purchase Orders track basic incoming stock without excluding stockout days from velocity, allocating freight and customs duty into InventoryItem.unitCost, issuing zero-login supplier confirmation links, rebalancing warehouse-to-POS store shelves, or calculating 1-level bundle BOM bottlenecks. ShelfSteady adds all five inside Shopify Admin and Web.

Does ShelfSteady charge a percentage of GMV or order volume?

Never. Every plan is 100% flat-rate with a 14-day free trial—start instantly via our Web Workspace (app.shelfsteady.com) on any live Shopify store, or bill natively on your Shopify invoice via Shopify's appSubscriptionCreate Billing API. Shopify Partner Development Stores run in a $0 sandbox automatically.

How does Glass-Box stockout-adjusted velocity prevent repeat stockouts?

If a SKU sells 90 units in 15 days and then sits at zero stock for the remaining 15 days, naive tools calculate 3.0 units/day instead of your true 6.0 units/day demand pace. ShelfSteady excludes zero-inventory days and shows the exact numerator, denominator, lead time, and safety stock on every row.

Do our factories or wholesalers need to create accounts to confirm POs?

No. Click Email PO to Vendor or copy the 30-day tokenized Magic-Link. Your supplier confirms actual dispatch quantities, sets ETD dates, and uploads their commercial PDF or image invoice from any browser with zero passwords.