Professor Oaks New Theory

Market Value

$0.71

Daily Change

+0.0%

30 Day Change

-5.3%

Price History

Gold is SlabIQ market. Blue / purple are eBay sold daily averages for PSA 10 and PSA 9 when available.

$0.89 → $0.71 (-20.2%)

SlabIQeBay sold · PSA 10

Touch and drag the chart to explore price history.

$999.95$0.71

Oct 27

SlabIQ $0.71

PSA 10 $999.95

Recent eBay sold comps by grade

$999.95

May 10, 2026 · PSA 10

eBay

Multi-signal valuation when recent sales are sparse or unavailable

IQ Estimated Market Value

$295.60

Confidence

77% · Moderate

Method

Hybrid

Catalog market

$0.71

7d trend

-2.7%

Scarcity score

20/100

Recent sales median

$999.95

Supporting data points (5)

Recent sold comps$999.95
1 recent sale; median 999.95
Weight 35% · Confidence 63%
SlabIQ catalog market$0.71
Catalog NM market 0.71
Weight 30% · Confidence 72%
Set comparable cards$2.64
6 priced cards in HeartGold SoulSilver; set median 3.53, uncommon rarity adjustment
Weight 22% · Confidence 46%
Trend-adjusted historical$0.69
-2.7% 7d trend applied to base 0.71
Weight 18% · Confidence 78%
Lowest active listing$0.24
Lowest listing 0.25 (slight discount applied)
Weight 12% · Confidence 58%

How this was calculated

1.Limited recent sales (1) — estimate weighted toward catalog and comparable signals with sales as a partial anchor.
2.SlabIQ catalog market for Professor Oaks New Theory is 0.71 (NM raw).
3.6 priced cards in HeartGold SoulSilver; set median 3.53, uncommon rarity adjustment.
4.Recent market trend: -2.7% over ~7 days.
5.Rarity/scarcity (uncommon, score 20/100) has limited premium impact.
6.Primary method: hybrid blend of sales and model signals.