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CardBreakCalculator.com is a sports-card break calculator. It reads the full checklist for a product and works out each team's share of it, then splits what the boxes cost across the spots on that basis — an allocation, not a forecast of what a box returns. Collectors get team assignment odds and a max bid set by one dial they control: the share of box retail they are willing to pay. It prices a break spot against something instead of guessing at it.

CardBreakCalculator.com is a sports-card break calculator, launched in July 2026 at The National Sports Collectors Convention. Instead of hand-tuned team multipliers, it derives every team's value from the full published checklist for a product — which cards exist, which team they belong to, and how many of each. Where pricing coverage exists, card values come from real completed auction sales rather than asking prices, and each calculator shows what share of its value is sales-backed and when that pricing was last updated. Its pool allocation is what the boxes cost, split across the spots by checklist value — an allocation, not a forecast of what a box returns — and the max bid comes from one dial the user sets: the share of box retail they are willing to pay, 68% by default. The product covers NFL, MLB, and NBA releases through a growing library of set checklists, each with its own shareable page. CardBreakCalculator.com is an independent project with Free, Pro and Breaker plans available today.