Koromon - BT21-004 (Gold Border) Advanced Booster Digimon Generation Common Digimon card — value and price

Koromon - BT21-004 (Gold Border)

Advanced Booster Digimon Generation · Common
Digimon dgm:678562 TCGplayer (daily snapshot, 2026-09-07)
Fair market value
$8.89
Consensus of 1 market price guide. Typical $7.51 – $10.30.
▼ 7% · 47d
Sources: TCGplayer (daily snapshot, 2026-09-07) · Near Mint, raw
Optimal buy
$8.18
Never pay above $8.57
Optimal sell
$9.38
Never sell below $9.04
Buy this card · aim to pay under $8.57
TCGplayer →Find on eBay →Graded (PSA 10) →Amazon: sealed →

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Selling this card
Optimal sell $9.38 · never below $9.04. 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.
Shipping & protection supplies
Low value — a sleeve in a plain/bubble mailer is plenty; tracking optional under ~$20.
Penny sleevesBubble mailers

Amazon Business Free to join and gives bulk pricing on sleeves, toploaders and mailers — worth it if you ship cards often.

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Common questions
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 $8.89 (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 $9.38 to clear without leaving money on the table; that nets about $6.76 after fees and shipping.

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

A disciplined buy target is about $8.18 — a discount to fair value that keeps an edge. Aim not to pay above $8.57.

Where can I buy Koromon - BT21-004 (Gold Border)?

Koromon - BT21-004 (Gold Border) is sold on eBay, TCGplayer, and Amazon. Compare live listings against the fair value of $8.89 and aim to pay under $8.57 — SplitShot links you straight to current listings at each marketplace.

Is now a good time to buy Koromon - BT21-004 (Gold Border)?

Koromon - BT21-004 (Gold Border) is trending stable lately. A disciplined entry is under $8.57; paying near or below $8.18 keeps a margin of safety versus the $8.89 fair value.

Estimate for guidance, not an appraisal. Value your exact copy →