Mastemon Hackers' Slumber Secret Rare Digimon card — value and price

Mastemon

Hackers' Slumber · Secret Rare
Digimon dgm:651090 TCGplayer (daily snapshot, 2026-07-24)
Fair market value
$11.11
Consensus of 1 market price guide. Typical $8.92 – $13.27.
▼ 9% · 35d
Sources: TCGplayer (daily snapshot, 2026-07-24) · Near Mint, raw
Optimal buy
$10.08
Never pay above $10.65
Optimal sell
$11.73
Never sell below $11.30
Buy this card · aim to pay under $10.65
Find on eBay → TCGplayer → Buy on Amazon → Graded (PSA 10) →

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Selling this card
Optimal sell $11.73 · never below $11.30. 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 sleevesBubble mailers
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Common questions
How much is Mastemon worth?

Mastemon from Hackers' Slumber has a fair market value of about $11.11 (Near Mint, raw), based on a consensus of current market price guides.

What is the best price to sell Mastemon?

List around $11.73 to clear without leaving money on the table; that nets about $8.81 after fees and shipping.

What should I pay to buy Mastemon?

A disciplined buy target is about $10.08 — a discount to fair value that keeps an edge. Aim not to pay above $10.65.

Where can I buy Mastemon?

Mastemon is sold on eBay, TCGplayer, and Amazon. Compare live listings against the fair value of $11.11 and aim to pay under $10.65 — SplitShot links you straight to current listings at each marketplace.

Is now a good time to buy Mastemon?

Mastemon is trending falling ~6% (7d vs 30d) lately. A disciplined entry is under $10.65; paying near or below $10.08 keeps a margin of safety versus the $11.11 fair value.

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