Birthday Kate #605b

Die-Cut
ScarcityPSA has graded 1.6x more base copies
PSA has graded 22 of the base card and 14 of this parallel (all grades). Graded counts are not print runs.
View all Birthday Kate cards →
Active on eBay · for sale now
PSA pop10

PSA 10 · 1988 Garbage Pail Kids Original Series 15 →

— Hold· thin volume
PSA pop · this parallel
10
Card # 605b⇄ 605AWindy Mindy
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.
$91
PSA 10 · highest-graded comp
🟢 lowest on eBay: $136.98 all-in
🛒 2 listings on eBay now PSA 10 SLAB
RAW (UNGRADED) — NOT A GRADED VALUE
$7
3 raw sales used for this value view raw sales →
● real comps ● est. — own older sales ● est. — never sold ● unsold
Price history · PSA 10
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 has been digging through this one's trash.
  • 4 recorded sales · 0 in the last year · trades only a few times a year · limited-confidence sample.
  • The recent trail reads $29 → $86 → $65 → $125 — a clear march higher.
  • Median moved +65% across the window ($58 → $95).
  • Heads up: the last recorded sale ($125 on 2025-02-22) landed 37% above our current value — weigh it as a single data point.
  • 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.

Birthday Kate — across every card

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

🧬 Should I slab it?

SAVE YOUR MONEY

Only a 42% gem rate on the 1988 GPK PSA pop (all sets that year) - graded pop is self-selected (best copies get submitted), so a random raw likely grades lower. Expected ~$50 before the $80 PSA fee (fee only - excludes shipping & insurance), ~$-30 after - near or below a raw copy ($7 from 3 raw sales). Not worth grading unless you are confident it is a 10.

Gem (PSA 10) rate
42%
1988 GPK, all sets · 75,397 graded
PSA 10 value
$91
if you hit the ten
Grading cost
$80
PSA Regular tier
Expected after grade
$-30
vs raw $7 from 3 raw sales

Probability-weighted across grades using PSA population (1988 GPK, all sets) 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.

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