How to Use the TCG Pack ROI Calculator
This calculator helps you determine whether opening booster packs is financially worthwhile. Enter the pack price, number of cards per pack, and each rarity's pull rate and average market value to instantly see the expected return and profit or loss per pack.
Formula: Expected value per card = Σ(rarity probability × card market value). Expected return per pack = expected value per card × cards per pack. Profit = expected return − pack price. Each card is assumed to be independently drawn from the probability distribution.
Use official pull rates from the publisher's website or packaging. Enter current secondary market (buylist or eBay sold) prices for the most accurate result. Make sure all rarity probabilities sum to exactly 100% for correct calculations.
Frequently Asked Questions
Expected return per pack = cards per pack × Σ(rarity probability × card value). Each card is assumed to independently draw from the probability distribution.
A warning will appear if probabilities deviate more than 1% from 100%. Adjust the values so all rarities sum to exactly 100%.
Any TCG with published pull rates: Pokémon TCG, Yu-Gi-Oh!, One Piece Card Game, Magic: The Gathering, and similar collectible card games.