Seller Profit & Inventory OS
Know what sold. Know what is left. Know what you actually made.
A focused Excel workbook for small sellers who want stock and profit answers without adopting another monthly SaaS tool.
R1 · One-time purchase · No subscription.
From products and stock to real order profit.
See the workbook structure before you choose it. These previews show the dashboard, sales log and product catalogue.
The numbers behind each sale.
Products & stock
Track products, SKU costs, starting and current stock, restocks, adjustments and low-stock alerts.
Order-level profit
Record sales by channel, shipping charged, platform fees, shipping costs, ads, other costs and COGS.
A useful overview
Review net profit and margin per order, monthly sales and profit, inventory value and profit by channel.
Ready for your real records.
Blank workbook
A clean workbook to enter your own products, orders, inventory and expenses.
Demo workbook
A separate fictional sample business that shows how the sheets connect.
Quick Start PDF
A short guide to setting up the workbook and recording your first sales.
START HERE · Dashboard · Products · Sales · Inventory · Expenses · Settings
One workbook across your channels.
- Etsy
- eBay
- Vinted
- Depop
- Facebook Marketplace
- Payhip & Gumroad
- Small Shopify stores
- Craft sellers & side hustles
R1 uses manual entry. It does not connect automatically to marketplaces or require a recurring API service.
Simple, practical requirements.
- Recommended
- Modern Microsoft Excel on Mac or Windows.
- Google Sheets
- The workbook can be opened in Google Sheets, but formatting and charts may not render identically.
- Delivery
- Payhip provides the digital download after purchase. The blank workbook, demo workbook and Quick Start PDF are included.
- Release
- R1 · One-time purchase · No subscription.
This workbook is a record-keeping and management tool. It is not accounting, tax, legal, investment or financial advice. Verify figures before using them for filings or business decisions.
A few useful answers.
Is this accounting software?
No. It is an operational record-keeping and management workbook, not accounting software or professional advice.
Does it connect automatically to Etsy or eBay?
No. R1 is intentionally manual-entry. Add your own records; there are no automatic marketplace connections or recurring API dependencies.
Can I track more than one marketplace?
Yes. Tag orders by platform and review sales and profit by channel in the workbook.
Do I need Microsoft Excel?
Modern Excel on Mac or Windows is recommended for the intended layout and charts. Google Sheets can open the workbook, but some formatting may differ.
Is there a subscription?
No. Seller Profit & Inventory OS R1 is a one-time digital purchase.
Questions before you start?
Plain Method support can help with product questions and access to the workbook.
Contact support Visit the Plain Method storeA clearer view of the work behind each sale.
Get Seller Profit & Inventory OS