Sealed Signal keeps source data, calculation assumptions, and recommendation thresholds separate so you can inspect—and replace—each one.
selling fees = market price × fee rate + fixed feenet proceeds = market price − fees − seller shippingprofit = net proceeds − purchase cost − purchase taxROI = profit ÷ acquisition cost × 100The default purchase price is retail / MSRP. Entering the actual shelf price immediately replaces that assumption. All stored currency amounts use integer cents.
These are a generic starting profile, not a claim about any specific marketplace. Adjust them to match where and how you sell.
This prevents a tiny-dollar flip from looking attractive just because its percentage return is high.
V1 never fabricates a quote and never labels a stale or manual value as live. A quote stores source, retrieval time, currency, optional source URL, and optional sample size. Missing is a valid state.
Seeded products use locally stored TCGplayer catalog imagery under Sealed Signal's written authorization. Each asset is mapped to its TCGplayer catalog product ID, and the illustrated reference remains available when a future product has no rights-cleared image.