— Hold · next 3 monthsNo sale in the last 3 months, so there is no fresh price to read; it stays a hold until it sells again.
PSA pop · this parallel
11
Card # 4
GPK Price Guide Value iBased on this card’s own sales at this grade, mostly the one sale from the last 6 months. Its nearby grades have been selling out of order, so their sales are weighed together.
$99
PSA 9 · from 5 real sales · last sold May 18
PSA 10 comp $123
RAW (UNGRADED) — NOT A GRADED VALUE
$75
5 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
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🗑️ The Garbologist says…

Too Few Recent Sales
The Garbologist sniffed around the sales pile.
  • 5 recorded sales · 1 in the last year · trades only a few times a year · limited-confidence sample.
  • The recent trail reads $60 → $74 → $95 → $105 → $90 — 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.

Sunny Marcelo· Marcelo Mayer — across every card

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

🧬 Should I slab it?

Keep it raw

About 1 in 2 copies of 2024 Bowman Chrome Mega Box Bowman GPK cards get a 10, and a 9 is worth $99 — after the $92 cost that is less than the $75 raw copy. Even a 10 ($123) would leave you about $31 after costs, not more than raw.

Expected value if graded$18 (after $92 all-in cost)
Raw value today$75 (from 5 raw sales)
VerdictKeep it raw

Even a PSA 10 would not beat the raw value.

Chance of a PSA 10
47%
2024 Bowman Chrome Mega Box Bowman GPK cards · 620 graded
PSA 10 value
$123
today · ~$123 by Jan 21, 2027
PSA 9 value
$99
today · ~$99 by Jan 21, 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 ~$38.
Grade odds (2024 Bowman Chrome Mega Box Bowman GPK cards, 620 PSA-graded): 10 · 47%, 9 · 37%, 8 · 12%, 7 or lower · 3%. People send their best copies, so a random raw copy usually grades a bit lower.
Values when it comes back (~95 days, about Jan 21, 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.
GPK Price Guide
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