Methodology
Every estimate in MarginMap is produced by a rule you can read. This page is the index of those rules; each links to the full explanation.
Canonical product identity
How MarginMap collapses messy marketplace titles into one canonical variant so price comparisons describe the same physical thing.
Landed cost
Item price plus shipping plus tax, computed per offer. How MarginMap handles unknown tax, free-shipping thresholds and cross-border charges without guessing.
Sold comps vs asking price
Fair market value from completed sales using a recency-weighted median with outlier filtering — never from active listings.
Evidence & confidence
Every score, median and recommendation in MarginMap links to its source records, retrieval timestamps and match confidence.
Margin & ROI
Expected profit, ROI, breakeven and liquidity computed from landed cost, sold comps, marketplace fees and holding time.
Marketplace fees
Category commissions, payment processing, promoted listings and shipping subsidies modelled per marketplace and per category.
Condition grading
Mapping inconsistent seller condition language onto a single grade ladder so comps and offers describe comparable goods.
Sourcing workflow
The seven-stage pipeline from watchlist to sold, with alerts, saved evaluations and post-sale accuracy feedback.
Demo data comes from synthetic registered sources. Estimates are decision support, not a guarantee of availability, authenticity, taxes, fees, or resale outcome.
Run one product through it
Open the workspace, search in plain language, and open the evidence drawer on the first number you doubt.