How to Cap Daily Price Movement on TCGplayer

A price change cap limits how much a card’s price can move in a single sync, so one spike, one bad market read, or one bot war can’t blow out a listing before you notice. This is a Settings-page task — see reacting to an active spike if you’re dealing with one right now instead of setting this up ahead of time.

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Step 1: Open Settings > Pricing

Go to Settings > Pricing and find the change cap section.

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Step 2: Set your cap percentage

Enter a maximum percentage change for cards at or above your threshold price (default $5.00). This is the cap most of your inventory will use.

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Step 3: Set a wider cap for low-value cards

Low-value cards need a wider cap than high-value ones — a $0.50 card moving to$0.75 is a 50% change but only 25 cents, while a $50 card moving 50$25 swing. Set a separate, larger percentage for cards below your threshold so cheap cards aren’t stuck refusing to move on ordinary market noise.

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Step 4: Set the threshold

The dollar threshold decides which of the two caps applies to a given card. Cards at or above it use your main cap; cards below it use the low-value cap.

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Step 5: Choose hold or clamp mode

• Hold rejects a change that exceeds the cap outright, keeping the card at its current price until a later sync (or a smaller move) lets it catch up.
• Clamp rate-limits the change instead — it applies the maximum allowed move rather than rejecting the update entirely, so the price still moves in the right direction, just capped.

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Step 6: Save and confirm

Run Update Prices or wait for your next sync, then check a capped card’s pricing breakdown with Test a card on Settings > Rules to confirm the cap layer applied as expected.

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Choosing hold vs. clamp

Clamp mode is generally the safer default for ongoing use — the price still tracks the market direction, just more slowly. Hold mode is closer to a full stop, useful if you’d rather review a large move by hand than let even a capped version through automatically. See what to do during an active price spike for the reactive side of this, and price spike detection for why caps matter.