Weighted average cost

The one thing you can't rebuild in Shopify

When Stocky went away, so did weighted average cost. We put it back — recalculated the moment you receive a PO, then written straight to Shopify.

  • Joe replies the same day
  • Most stores live the same week
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Joe walks you through it personally — most stores are live the same week.

Quick note to Joe

Tell us about your store

Joe replies personally · usually the same day

Cost recalculated at receipt

Already on hand

68×$17.90

$1,217.20 in stock value

Just received

240×$18.60

$4,464.00 on PO-1184

New weighted average

$18.44 per unit, across all 308

How cost sync works

Confirm the new WAC, then receive into Shopify

When automatic cost sync at PO receipt is on, every PO receive opens a confirmation: on-hand cost, this receipt, and the new weighted average — before quantities land in Shopify. Same idea as Stocky, with an audit trail on every save.

Inventory Mate
Northline Supply
Dashboard
Stock Replenishment
Purchase Orders
Suppliers
Stock Take
Reports
Notifications
Integrations
Maya Ellison
maya.ellison@northline.co
Team Member
Receive inventory
Confirm weighted average cost before quantities land in Shopify
Cancel
Update cost and receive
Automatic cost sync at PO receipt
Growth+ · confirmation on every receive
On
Shopify unit cost → new WAC
Product
On hand
This receipt
Shopify
New WAC
The Collection Snowboard: Hydrogen
HYD-155
68 × $17.90
240 × $18.60
$17.90
$18.44
The Collection Snowboard: Liquid
LQD-152
40 × $24.10
80 × $26.03
$24.10
$25.41
SKU COGS report
Ad hoc on every plan · last 90 days · landed-cost view
Last 90 days
Push to Shopify
SKU
In range
Suggested cost
Shopify
HydrogenHYD-155
308 u
$18.44
$17.90
LiquidLQD-152
120 u
$25.41
$24.10
OxygenOXY-158
14 u
$3.12
$2.67
1

Your suppliers come with you

Vendor associations, products, and variants pull straight from Shopify — most stores need almost no manual setup.

2

Bulk-add, not re-type

Add every product from a vendor to a PO in one go, or upload a CSV. Quantities and costs arrive pre-filled.

3

Receive the way you used to

Partial receipts, incoming quantities pushed to Shopify, and cost updated on arrival — the Stocky workflow, intact.

Joe walks you through it personally — most stores are live the same week. Or send a quick note.

From merchants who already left Stocky

They weren't looking for a spreadsheet. They needed the workflow back.

In my 15 years running e-commerce stores and having used or trialled almost every major and smaller WMS tool, app and PO ordering system available over the years, I can say Inventory Mate is the best and most cost-effective, accurate, and easy-to-use tool on the market for ordering stock and managing live COGS. After looking into many alternatives to Stocky, this was the only system that did exactly what I needed. In the rare case that I need it, their support team is available within minutes to assist me. This app is an absolute game changer for ecommerce — there is nothing else like it.

Clean Nectarine
Australia

We have just started using Inventory Mate as a replacement for Stocky. So far the app has been easy to use and does all the things we want plus loads more. The best thing about this app is the founder, Joe. He is very knowledgeable, helpful, and quick to provide support when we have questions. Additionally, this app seems to be decently customizable.

Butchers & Packers Supplies
Canada · 2 months using the app

With the sunsetting of Stocky we began looking for similar options. After trying several other apps, we came across Inventory Mate and I'm so thankful. It does almost everything we were looking for and their customer service has been 1000% — they respond almost instantly, a real person and not AI, and have been able to implement the features we've requested.

Drayton Hall
United States · 13 days using the app

My independent retail store is thrilled to have found this PO and inventory management solution at a great value, as we transition away from Stocky. Inventory Mate is straightforward, syncs all my data straight from Shopify, and provides everything I need to monitor inventory levels, manage my vendor database, write, receive, partially receive, and pay PO's.

East Elm Kitchen Co
United States · 22 days using the app

The rest of the workflow

Every main feature from Inventory Mate — with the screens you'll use

Weighted average cost is the gap Shopify left. Replenishment, purchase orders, and cash flow are the rest of the Stocky-shaped workflow — same tools as the home page, with the UI you'll actually click.

Replenishment

Know what to reorder, down to the unit

Suggested quantities blend real demand with each supplier's lead time, so bestsellers stay in stock without over-buying.

  • Suggested restock quantities from real demand, not guesswork
  • Lead-time aware, so orders land before you sell out
  • Select what you need and turn it into a PO in one click
Inventory Mate
Northline Supply
Dashboard
Stock Replenishment
Purchase Orders
Suppliers
Stock Take
Reports
Notifications
Integrations
Maya Ellison
maya.ellison@northline.co
Team Member
Stock Replenishment
Manage inventory and reorder recommendations.
Search products
Create PO
Filter
Status 5
Supplier
Columns
Suggested restock > 0
Bulk Actions
Create PO
Deselect all
Product
Forecast
Avail.
PO
Avg daily
Lead time
Days
Suggested restock
Status
Test Product #2
S · $12.00
0
0
0.10
2.00
20
5 units
$60.00
Critical
0 days of stock
The Complete Snowboard
Powder · $436.00
2
0
0.10
2.00
20
4 units
$1,744.00
Order Now
20 days of stock
The Collection Snowboard: Liquid
Default · $26.03
2
0
0.10
2.00
20
3 units
$78.09
Order Now
20 days of stock
Gift Card
$25 · $25.00
8
12
0.24
4.80
20
6 units
$150.00
On Order
33 days of stock
Selling Plans Ski Wax
Special · $49.95
22
0
0.31
6.20
20
0 units
$0.00
Good
71 days of stock
Showing 5 of 32 productsPage 1 of 7

Purchase orders

Every order, from draft to delivered

Supplier, destination, carrier, and costs live on one record — with receipts and payment status kept honest as the shipment moves.

  • Draft, send, and receive POs without leaving the app
  • Partial receipts, tracking, and payment terms on one record
  • Push finished orders into QuickBooks when you are ready
Inventory Mate
Northline Supply
Dashboard
Stock Replenishment
Purchase Orders
Suppliers
Stock Take
Reports
Notifications
Integrations
Maya Ellison
maya.ellison@northline.co
Team Member
All purchase orders
PO#69SHIPPEDPayment overdue
Hydrogen Vendor · created Jul 10, 2026
Edit
Receive items
Supplier and destination
Supplier
Hydrogen Vendor
Destination
My Custom Location · Toronto, ON
Shipment details
Estimated arrival Oct 22, 2026
74 days remainingLead time: 104 days
Carrier
USPS
Tracking number
9400 1000 0000 0000
Payment
Overdue
Payment terms
Net 7
Currency
US Dollar (USD)
Amount paid
0
Amount owed
901.90
Paid on
Select date
Products
Product
Supplier SKU
Received
Unit cost
Total
The Collection Snowboard: Hydrogen
HYD-155
10 / 10 · Received 07/15
$37.32
$373.20
The Collection Snowboard: Liquid
LQD-152
1 / 1 · Received 07/15
$26.03
$26.03
The Collection Snowboard: Oxygen
OXY-158
0 / 1 · Awaiting receipt
$2.67
$2.67
3 line items · 12 units
Subtotal $401.90Tax $0.00Shipping $500.00Total $901.90 USD

Costing

Weighted average cost, back in Shopify

Shopify does not keep a perpetual average when you receive stock. Inventory Mate writes true WAC — automatically at PO receipt, or whenever you run the SKU COGS report.

  • Automatic cost sync at PO receipt, with a confirmation before Shopify updates
  • SKU COGS report on every plan: pick a PO date range, review, and push
  • Landed-cost view allocates shipping and duties the way Stocky did
Inventory Mate
Northline Supply
Dashboard
Stock Replenishment
Purchase Orders
Suppliers
Stock Take
Reports
Notifications
Integrations
Maya Ellison
maya.ellison@northline.co
Team Member
Receive inventory
Confirm weighted average cost before quantities land in Shopify
Cancel
Update cost and receive
Automatic cost sync at PO receipt
Growth+ · confirmation on every receive
On
Shopify unit cost → new WAC
Product
On hand
This receipt
Shopify
New WAC
The Collection Snowboard: Hydrogen
HYD-155
68 × $17.90
240 × $18.60
$17.90
$18.44
The Collection Snowboard: Liquid
LQD-152
40 × $24.10
80 × $26.03
$24.10
$25.41
SKU COGS report
Ad hoc on every plan · last 90 days · landed-cost view
Last 90 days
Push to Shopify
SKU
In range
Suggested cost
Shopify
HydrogenHYD-155
308 u
$18.44
$17.90
LiquidLQD-152
120 u
$25.41
$24.10
OxygenOXY-158
14 u
$3.12
$2.67

Cash flow

See the cash impact before you commit

Watch the projected balance move as you plan, so a big reorder never quietly becomes a cash-flow problem.

  • Supplier-ready POs with costs, quantities, and destinations filled in
  • Track shipments, partial receipts, and payment status in one view
  • Projected balance shows shortfalls months before they hit
Inventory Mate
Northline Supply
Dashboard
Stock Replenishment
Purchase Orders
Suppliers
Stock Take
Reports
Notifications
Integrations
Maya Ellison
maya.ellison@northline.co
Team Member
Cash Flow Planning
12-month projection from current sales trends
Next 12 months
Export
Projected balance
$7,348
Cash in (12mo)
$412,900
Cash out (12mo)
$405,552
Tied up in stock
$70,976
Cash in vs. cash out
Monthly inflow, outflow, and running balance
J
F
M
A
M
J
J
A
S
O
N
D
Cash in
Cash out
Balance

Before you rebuild it by hand

The questions every Stocky merchant asks

Can't I just keep cost in Shopify myself?
Shopify does not maintain a perpetual weighted average when you receive stock. Native cost is typically the last purchase price you typed in. That's the gap Stocky filled — and the gap Inventory Mate writes back automatically at receipt.
Is automatic cost sync on every plan?
Automatic weighted-average sync at PO receipt is on Growth, Scale, and Enterprise — and stays available for merchants still on the legacy Unlimited plan. Every plan includes the SKU COGS report, so you can still blend costs from past POs and push them to Shopify when you're ready — including a landed-cost view.
We have a large catalog. Will it keep up?
Yes. Products and vendor associations sync from Shopify (webhooks plus a nightly pass). Bulk-add a vendor's full line to a PO, or upload a CSV. Merchants with big catalogs use this daily.
What about training? We don't have time to relearn a tool.
The receive flow is the Stocky one: draft the PO, incoming quantity hits Shopify, receive in full or in part, cost updates on arrival. Docs are live for weighted average cost. Joe still does the walkthrough himself — that's the 15-minute call.

Prefer to read first? Weighted average cost at receipt · Compare plans

Quick note to Joe

Tell us about your store

Name, email, and your Shopify shop. Joe replies personally — usually the same day. No sales deck.

Don't rebuild cost in a spreadsheet

Book 15 minutes with Joe, or start the trial and receive a PO the same day. Incoming quantity, partial receipts, and weighted average cost — the way you already work.

Start free trial