— Holdnext 3 months: cards here were a coin flip, typically about flat
PSA pop · this parallel
22
Card # 29b⇄ 29ABony Joanie
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.
$20
PSA 5 · this grade▲ +58%
Highest graded sale with a real comp PSA 9 · $197
no PSA 5 listed on eBay right now
RAW (UNGRADED) — NOT A GRADED VALUE
$12
137 raw sales used for this value view raw sales →
● real comps ● est. — own older sales ● est. — never sold ● unsold
Price history · PSA 5
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…

Trending Up
The Garbologist sniffed around the sales pile.
  • 6 recorded sales · 3 in the last year · trades only a few times a year · moderate-confidence sample.
  • The recent trail reads $13 → $10 → $6 → $21 → $27 — a clear march higher.
  • Median moved +58% across the window ($13 → $21).
  • Heads up: the last recorded sale ($27 on 2026-09-30) landed 35% above our current value — weigh it as a single data point.
  • Census check: PSA has graded 436 of this card, and only 4.1% come back a 10 — a genuine condition rarity.
  • Net-net, the momentum points up — real buyers are paying more, more often. Not a promise, just what the garbage is telling us.

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.

Thin Lynn — across every card

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

🧬 Should I slab it?

SLAB IT

About a 4% gem (PSA 10) 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 value ~$135 before the $80 PSA fee (fee only - excludes shipping & insurance), ~$55 after, vs a raw copy around $12 from 137 raw sales. Grading pencils out here, especially if you hit the $1,140 ten.

Gem (PSA 10) rate
4%
this card · 433 graded
PSA 10 value
$1,140
if you hit the ten
Grading cost
$80
PSA Regular tier
Expected after grade
$55
vs raw $12 from 137 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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