Never sold — estimate
PSA pop · this parallel
1
GPK Price Guide Value iGPK Price Guide Value is a recency-weighted market value from REAL sales of this exact card+grade (recent comps count most, outliers stripped) — steadier and harder to game than a single 'last sale', which can be one lucky auction or a shill bid. When a card has few or no recent comps, we estimate transparently from its own older sales, its other grades, and comparable cards (same subject/set/rarity tier), factoring subject trend and scarcity — and we LABEL it as an estimate until real sales arrive.
$33
PSA 6 · estimate — never sold
Highest graded sale with a real comp PSA 9 · $69
no PSA 6 listed on eBay right now
RAW (UNGRADED) — NOT A GRADED VALUE
$31
10 raw sales used for this value view raw sales →
● real comps ● est. — own older sales ● est. — never sold ● unsold
Price history · PSA 6
On-the-record sales go back as far as PSA reports them — late 2017 for GPK — plus eBay-tracked and raw sales as they land.
DatePriceGradeCertType
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🗑️ The Garbologist says…

Too Thin To Call
The Garbologist popped the lid on this card.
  • Nobody's actually sold this exact card and grade on record, so there's no live market to read — the price you see is a modeled estimate, not a realized sale.
  • With this little to go on, the honest answer is we can't call a direction — one auction would swing the whole read.

Automated analysis generated from this card’s real recorded sales and PSA population data — no opinions, no predictions guaranteed. Entertainment and research only, not financial advice.

Hammerin' Harper — across every card

Subject page →
Every Hammerin' Harper card we track — how the character is moving, not just this one grade.

🧬 Should I slab it?

BORDERLINE

Roughly a 54% gem rate on this card's own PSA pop - graded pop is self-selected (best copies get submitted), so a random raw likely grades lower. Expected ~$101 before the $80 PSA fee (fee only - excludes shipping & insurance), ~$21 after - about even with a raw copy ($31 from 10 raw sales). A coin flip that only pays off on a high grade.

Gem (PSA 10) rate
54%
this card · 48 graded
PSA 10 value
$140
if you hit the ten
Grading cost
$80
PSA Regular tier
Expected after grade
$21
vs raw $31 from 10 raw sales

Probability-weighted across grades using PSA population (this card) as a proxy for cut & print quality, minus the grading fee. A guide, not a guarantee — centering and eye-appeal on your specific copy decide the grade.

GPK Price Guide
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