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Free vendor tool · USD

Show break-even calculator

Know what your table needs to sell before you book it. Add your show costs and expected gross margin to estimate the sales revenue that covers your weekend.

No account needed. Your inputs stay on this page: they are never saved or sent anywhere.

1. Estimate your show costs

Fixed expenses for this show, excluding the cost of the cards you sell. All amounts are in US dollars.

2. Estimate your gross margin

The share of sales left after the cost of cards sold. Sell a card for $100 that cost $70: your gross margin is 30%, not 30% markup.

Sales revenue to break even

$1,166.67

Covers $350.00 in show costs at 30% gross margin.

Target rounded up to the next cent. This is sales revenue, not profit.

What could the show make?

Estimated profit after the cost of cards sold and the show expenses above. Assumes the same margin at every sales level.

Estimated show profit at example sales levels
Sales revenueEstimated profit
$500.00-$200.00
$1,000.00-$50.00
$2,000.00$250.00
$3,000.00$550.00

Estimated profit: $250.00

The math behind your target

Break-even sales = total show costs ÷ gross margin fraction. With $350 of show costs and a 30% margin, you need $1,166.67 in sales. At $2,000 of sales, $600 remains after the cost of cards sold; subtract $350 of show costs for $250 of estimated profit.

Margin and markup use different bases. Margin is (selling price − stock cost) ÷ selling price. Markup divides that same difference by stock cost. A $70 card sold for $100 has a 30% margin and about 42.86% markup.

Use a blended margin for the stock you expect to sell. If payment fees vary with sales, subtract their percentage from your expected margin. Put fixed payment fees in other expenses. Unsold inventory purchases affect cash flow, not this profit estimate. Taxes, your time, trade profit and costs you leave out are not included.

At 0% margin and zero costs, every sales level breaks even. At 0% margin with positive costs, no amount of sales covers those costs. This is a planning estimate, not a guarantee of sales.

Plan the target. Track the real show.

Use CardOps to organize your show and record what actually sells. Compare real sales, stock costs and expenses when the weekend is over.

Plan your show in CardOpsSee what’s included free
CardOps

The inventory app for Pokémon card vendors who sell at shows. Scan, price, and run your whole table from your phone.

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© 2026 Havasi Holding LLC. Out now on the App Store.CardOps is an independent tool and is not produced by, affiliated with, sponsored by, or endorsed by any trading-card publisher, marketplace, or grading company. Pokémon and Pokémon card names are trademarks of Nintendo, Creatures Inc., GAME FREAK inc., and The Pokémon Company.