Author name: Randy Thebeau

Comparison · 2026 SKU Compass vs Sellerboard: Honest Comparison for Amazon Sellers (2026) Sellerboard is a cheap, popular Amazon profit-analytics

Comparison · 2026 Best Inventory Software for High-Volume Amazon Brands (2026) At $1M+ and thousands of SKUs, the 2026 Amazon

Comparison · 2026 Best Inventory Software for Walmart Sellers (2026) Most “best inventory software” lists are written for Amazon and

Free Calculator · 2026 Safety Stock Calculator (Free): Formula + the Multi-Channel Catch Enter your max and average daily sales

Free Calculator · 2026 Reorder Point Calculator (Free): Formula + When to Reorder Enter your average daily sales, lead time,

Sellerboard is a strong Amazon profit-analytics tool. The four reasons sellers outgrow it, an honest ranking of alternatives, and why forecasting is a different job than profit reporting.

Forecast accuracy explained: the MAPE formula with a worked example, MAPE vs WAPE vs bias, what counts as good, and why per-SKU per-channel measurement matters.

The 7 inventory KPIs that matter most — turnover, days of supply, sell-through, in-stock rate, GMROI, aged inventory %, and forecast accuracy — with formulas and healthy ranges.

EOQ is the order size that minimizes combined ordering and holding cost. The formula, a worked example, the three inputs, and the honest limits for multi-channel ecommerce.

Seven levers that reduce Amazon FBA fees in 2026 — storage, aged-inventory surcharge, low-inventory fee, inbound placement, size tier, AWD, and reimbursements — ranked by impact.