How much is Koby (Treasure Cup) worth?

Koby (Treasure Cup) from One Piece Promotion Cards has a fair market value of about $359.86 (Near Mint, raw), based on a consensus of current market price guides.

What is the best price to sell Koby (Treasure Cup)?

List around $379.65 to clear without leaving money on the table; that nets about $314.90 after fees and shipping.

What should I pay to buy Koby (Treasure Cup)?

A disciplined buy target is about $333.30 — a discount to fair value that keeps an edge.

Koby (Treasure Cup) · One Piece Promotion Cards — One Piece Card Value

Name: Koby (Treasure Cup)
Brand: One Piece
Price: 359.86 USD
Availability: InStock

Koby (Treasure Cup)

One Piece Promotion Cards · C

One Piece op:535277 TCGplayer (daily snapshot, 2026-06-10)

Fair market value

$359.86

Consensus of 1 market price guide. Typical $311.71 – $409.88.

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

Optimal buy

$333.30

Never pay above $347.91

Optimal sell

$379.65

Never sell below $365.80

Buy this card · aim to pay under $347.91

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

When it arrives: a card at this value belongs in a sleeve inside a magnetic one-touch, out of sunlight.

Magnetic one-touch holder Penny sleeves

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Selling this card

Optimal sell $379.65 · never below $365.80. 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

High value — use a sleeve + one-touch (or toploader) inside a rigid mailer, tracked, with signature confirmation.

Penny sleeves Magnetic one-touch holder Toploaders Bubble mailers Rigid/cardboard mailer Painter’s tape

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