Inskeep resources

Practical guidance for running inventory and marketplace operations.

Clear formulas, controls, and operating checklists grounded in the financial and inventory problems commerce teams handle every day.

Software evaluation

Choose inventory replenishment software

Use a practical scorecard to compare inventory replenishment software across demand signals, stock position, supplier constraints, purchase orders, implementation, and reporting.

15 minute read
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Multichannel inventory

Manage inventory across every sales channel

A practical guide to managing shared inventory, orders, listings, purchasing, and profit across Shopify, Amazon, eBay, and other sales channels.

12 minute read
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Marketplace financials

Calculate true eBay profit

A practical eBay profit calculation that separates customer revenue, marketplace fees, promoted-listing charges, refunds, shipping, and product cost.

8 minute read
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Inventory operations

Prevent multichannel overselling

A practical framework for preventing overselling across Shopify, Amazon, and eBay with shared inventory, reservations, safety stock, and reliable sync controls.

9 minute read
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Purchasing and replenishment

Calculate an inventory reorder point

Learn the reorder point formula, calculate demand during lead time and safety stock, and turn the result into a practical purchasing workflow.

8 minute read
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Purchasing and replenishment

Calculate practical safety stock

Learn how to calculate safety stock from demand and lead-time variability, choose an appropriate service level, and avoid arbitrary inventory buffers.

10 minute read
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Purchasing and replenishment

Set min/max inventory levels

Learn how min/max inventory planning uses a reorder threshold and target stock level to create practical, reviewable replenishment quantities.

9 minute read
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Purchasing and replenishment

Plan multi-location replenishment

A practical framework for replenishing multiple stores and warehouses using location demand, shared incoming stock, transfers, and service priorities.

11 minute read
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Free inventory tool

Calculate a reorder point and purchase quantity.

Use demand, lead time, safety stock, incoming units, and reservations to plan replenishment.

Reorder point calculator
Free profit tool

Calculate marketplace profit before trusting the payout.

Model fees, advertising, shipping, refunds, and product cost without creating an account.

Profit calculator