This card30d 90d 1y All-time
Birthday Kate #605b 1988 Garbage Pail Kids Series 15 · PSA 10
View all Birthday Kate cards →PSA pop12
All grades · value and PSA population
BIRTHDAY KATE ACTIVE🟢 lowest on eBay: $106.98 all-in
🛒 8 listings on eBay now PSA 10 SLAB ×2 · RAW ×6
RAW (UNGRADED) — NOT A GRADED VALUE
$6
10 raw sales used for this value
view raw sales →
Front
Back
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.
🗑️ The Garbologist says…
Trending Up
The Garbologist has been digging through this one's trash.
- 9 recorded sales · 4 in the last year · trades only a few times a year · moderate-confidence sample.
- Following the trash: $100 → $20 → $94 → $39 → $100 — a clear march higher.
- Median moved +132% across the window ($40 → $94).
- Heads up: the last recorded sale ($100 on 2026-10-29) landed 49% 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?
Keep it rawAbout 1 in 3 copies of 1988 Original Series 15 cards get a 10, and a 9 is worth $15 — less than the $92 it costs to grade. Even a 10 ($67) would leave you about -$25 after costs, not more than raw.
Expected value if gradedunder $0 (the likely slab, $33, is $59 short of the $92 all-in cost)
Raw value today$6 (from 10 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
$67
today · ~$67 by Feb 12, 2027
PSA 9 value
$15
today · ~$15 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.
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.
Birthday Kate #605b 1988 Garbage Pail Kids Series 15 value by grade
| Grade | Value | Sales | PSA pop |
|---|---|---|---|
| PSA 10 | $67 | 9 | 12 |
| PSA 9 | $15 | 4 | 10 |
| PSA 8 | $13 est. | 0 | 1 |
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.
