How much is Koromon - BT21-004 (Gold Border) worth?

Koromon - BT21-004 (Gold Border) from Advanced Booster Digimon Generation has a fair market value of about $9.48 (Near Mint, raw), based on a consensus of current market price guides.

What is the best price to sell Koromon - BT21-004 (Gold Border)?

List around $10.00 to clear without leaving money on the table; that nets about $7.30 after fees and shipping.

What should I pay to buy Koromon - BT21-004 (Gold Border)?

A disciplined buy target is about $8.78 — a discount to fair value that keeps an edge.

Koromon - BT21-004 (Gold Border) · Advanced Booster Digimon Generation — Digimon Card Value

Name: Koromon - BT21-004 (Gold Border)
Brand: Digimon
Price: 9.48 USD
Availability: InStock

Koromon - BT21-004 (Gold Border)

Advanced Booster Digimon Generation · Common

Digimon dgm:678562 TCGplayer (daily snapshot, 2026-06-10)

Fair market value

$9.48

Consensus of 1 market price guide. Typical $8.21 – $10.80.

Sources: TCGplayer (daily snapshot, 2026-06-10) · Near Mint, raw

Optimal buy

$8.78

Never pay above $9.17

Optimal sell

$10.00

Never sell below $9.64

Buy this card · aim to pay under $9.17

Find on eBay → TCGplayer → Buy on Amazon → Graded (PSA 10) →

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Selling this card

Optimal sell $10.00 · never below $9.64. Value your copy for the live net-after-fees calculator.

Where to sell

eBay~13.25% + $0.30Largest audience; on any listing use “Sell one like this” to prefill yours.TCGplayer~10–11%Best for singles; buyers expect competitive, data-driven pricing.Whatnot~8% + paymentLive-auction app; strong for breaks, lots, and fast sales.

Shipping & protection supplies

Low value — a sleeve in a plain/bubble mailer is plenty; tracking optional under ~$20.

Penny sleeves Bubble mailers

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