Cornerstone Mask Ogerpon ex
Prismatic Evolutions · #160 · SIR$13.87fair value $16.59
▼ 16% underPriced below fair value.
Market readSimilar cards →
StableNo material movement in price, demand, or supply. A description of the data today, not a forecast.
30 daysPrice−5%Sales−6%Listings+2%
Repriced 2026-10-28 · Fair value is descriptive, not a forecast
Fair-Value Lab PremiumNudge the fundamentals and watch fair value respond. Explore scenarios for this card.
Start free trialPrice history
Raw priceRaw
$12.80▼ −$2.58 (−16.8%)past 90 days
$13.71$14.46$15.21$12.80
Aug 1Aug 23Sep 14Oct 5Oct 27
Market price
Latest raw market price · $12.80 · Oct 27, 2026Grading
Grade ladder
Confidence (High / Med / Low) is how much recorded sale history backs the price. Low means only a few sales, so treat it as directional. Prices are eBay-sold medians; ×raw is the grading premium; sales count the last 30 days.What this card sells for at each grade, and how many sales back each price.SkipGrading a raw copy to PSA 10 pencils about −61% expected return.Raw $13.87 → PSA 10 $90.00 · 6.5×
GradePrice× RawLast saleSales 30dConfidence
—Raw$13.87———High
PSA10$90.006.5×$79.49 · Sep 20High
CGCPristine 10CGC 10 sales whose eBay listing says Pristine. The top CGC grade, so it can sell above a PSA 10. 8.4% of this card's graded CGC slabs are Pristine (population as of Oct 3), across everything CGC has graded, so it isn't the odds for your slab.$39.602.9×$39.60 · Sep 140Low
CGC10Pristine 10 sales are left out and shown on their own line.$24.001.7×$28.00 · Oct 241Med
SGC10$37.202.7×—0Low
Grade distribution
How copies sent to PSA have come back.Gem rate28.6%
PSA graded1,536
PSA 10
43928.6%
PSA 9
81553.1%
PSA 8
23115%
PSA 7
352.3%
6 & below
161%
Other graders · as of Oct 2026
PSA population from our own psacard.com read, Oct 4, 2026. Half grades count toward the grade below (a 9.5 is a 9). Other graders as of Oct 2026.CGC142 graded · 38.7% top · 13 Pristine
BGS24 graded · 0% top
SGC4 graded · 50% top
Market
Supply & demand
How many copies are for sale, and how fast they're selling.Raw
TCGplayer listings121111 sellers · -12% vs 7d
Sold / week11▼ 6.3% vs 30d
Demand pressure9% · soft
softhot
Supply trendsteady · +2%
ClearingBuilding
TCGplayer sales · sold per day
Supply is the TCGplayer listing count; demand pressure = weekly TCGplayer sales ÷ listings (soft → hot), a single-venue sell-through read. The supply-trend gauge reads eBay where we have it, with the TCGplayer listings trend surfacing as its history matures. Descriptive market context, not a forecast.Aug 20Oct 27
Investment Score
One grade for how durable this card's demand looks today.Data snapshot, not a forecast
F
33/100Avoid
S+SABCDF
Cornerstone Mask Ogerpon ex earns a 33/100 investment score and an F grade (avoid). It's trading 16% below our fair value. It's one of the lower-priced cards in Prismatic Evolutions. Grading it to PSA-10 doesn't pencil at today's prices. It trades thinly.
30-day move▼ 7%
Grading edge-62%
Time window30d
What drives the scoreout of 10, vs. modeled cards
Demand
1.4
Scarcity
6.6
Stability
8.4
