Set ↗30d−23%few sales90d+16%few sales1y+32%not clear yet
This card30d 90d 1y All-time 

Foul Bill #603b 1988 Garbage Pail Kids Series 15 · PSA 9

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PSA pop9

PSA 9 · 1988 Garbage Pail Kids Original Series 15 →

— Hold · next 3 monthsIts one sale in the last 3 months was $20, with no sale in the nine months before that to compare. Cards like this have stayed about flat over the next 3 months (5,110 cards since 2019).
PSA pop · this parallel
9
Card # 603b⇄ 603AMitch Mitt
GPK Price Guide Value iBased on this card’s sales at this grade: 1 sale in 2026 near $20; similar cards point lower ($14); and 2 older sales from 2024-2025 near $25, about $28 after the set's rise since.
$17
PSA 9 · from 4 real sales · last sold Sep 19
PSA 10 comp $58
no PSA 9 listed on eBay right now
RAW (UNGRADED) — NOT A GRADED VALUE
$3
11 raw sales used for this value view raw sales →
● real comps ● est. — own older sales ● est. — never sold ● unsold
Price history · PSA 9
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
2026-09-19$19.99PSA 9163517681 ↗Auction
2025-10-15$39.99PSA 921259093 ↗BestOffer
2024-11-23$9.99PSA 996214130 ↗Auction
2020-11-01$11.55PSA 946962123 ↗Auction

🗑️ The Garbologist says…

Too Few Recent Sales
Straight from the Garbologist's clipboard:
  • 4 recorded sales · 1 in the last year · trades only a few times a year · limited-confidence sample.
  • The recent trail reads $12 → $10 → $40 → $20 — choppy but broadly rangebound.
  • None

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.

Foul Bill — across every card

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

🧬 Should I slab it?

Keep it raw

About 1 in 3 copies of 1988 Original Series 15 cards get a 10, and a 9 is worth $17 — less than the $92 it costs to grade. Even a 10 ($58) would leave you about -$34 after costs, not more than raw.

Expected value if gradedunder $0 (the likely slab, $31, is $61 short of the $92 all-in cost)
Raw value today$3 (from 11 raw sales)
VerdictKeep it raw

Even a PSA 10 would not beat the raw value.

Chance of a PSA 10
35%
1988 Original Series 15 cards · 2,223 graded
PSA 10 value
$58
today · ~$58 by Feb 12, 2027
PSA 9 value
$17
today · ~$17 by Feb 12, 2027
All-in cost
$92
PSA fee $60 + shipping both ways $32
How these numbers work
All-in cost $92: PSA Standard tier fee $60 per card, insured shipping to PSA ~$12, PSA insured return shipping ~$20. Sending it to your PSA Vault instead skips return shipping (vault intake and storage are free): ~$72 all-in, so a graded copy would net ~under $0.
Grade odds (1988 Original Series 15 cards, 2,223 PSA-graded): 10 · 35%, 9 · 41%, 8 · 12%, 7 or lower · 11%. People send their best copies, so a random raw copy usually grades a bit lower.
Values when it comes back (~95 days, about Feb 12, 2027): today's values (the set has no clear 3-month trend).
Expected value if graded = each grade's chance × its value, minus the all-in cost. A guide, not a guarantee — centering and corners on your copy decide the grade.

Foul Bill #603b 1988 Garbage Pail Kids Series 15 value by grade

GradeValueSalesPSA pop
PSA 10$5829
PSA 9$1749
PSA 7$13 est.01
PSA 5$10 est.01

Every grade of this card on one page. Est. = no sale at that grade yet. Tap a grade above to switch the whole page to it.

GPK Price Guide
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