Professor Elm's Lecture
Lost Thunder · #213 · GXT
Professor Elm's Lecture
Lost Thunder · #213 · GXT
Overview
Fair-value verdict
Raw
$164.32
PREMIUM +8%Modeled fair value $152.41
Priced about right, leaning rich.
Supply Building Listings are piling up faster than they sell.
Listings +50% · Price +75%
PSA 10
How Market is measured The Market value is a robust median of PSA 10 sold prices, a 7-day window when the card sells ≥5/week, widening to 30 to 60 days for thin volume, with an outlier filter. The chart plots the individual sales, so a recent spike can ride above this median. Reading raw vs. slab The two verdicts measure against different benchmarks, so they can point different directions without disagreeing. Raw is judged against the graded market, so a discount means the raw card is cheap relative to its PSA 10. Slab is judged against fundamentals, so a premium means the PSA 10 itself looks rich versus print scarcity, grading rates, and demand. Both can be true at once.$650.00
FAIRModeled fair value $670.54
Priced about right.
Grading How often this card grades PSA 10 (gem rate), what a PSA 10 sells for versus the raw card and how many PSA 10s exist.
Gem rate 31% · 4× raw · 350 PSA 10s
Investment Score
Professor Elm's Lecture earns a 52/100 investment score and a C grade (fair hold). It's trading 8% above our fair value. That puts it among the most valuable cards in Lost Thunder. Grading a raw copy to PSA-10 currently pencils about 28% ROI. It trades thinly.
- Demand3.6
- Scarcity8.0
- Stability8.9
This is a snapshot of demand fundamentals, not a forecast and not financial advice. "Gaining steam" just shows that the price has moved recently, not that it'll keep moving. The score measures durability, not how a card behaves in a crash. And keep an eye out for reprints, which can crash a chase card fast no matter how high the grade. Scores compare cards within the modern era (Mega Evolution, Scarlet & Violet, Sword & Shield) — not against vintage.
Price chart
Price history
Sep 14, 2026
Most recent PSA 10 sale · $700.00 · May 25, 2026
Grading
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.| Grade | Price | × Raw | Last sale | Sales (30d) | Confidence |
|---|---|---|---|---|---|
| Raw | $164.32 | — | $142 Aug 15 | 0 | High |
 10 | $650.00 | 4.0× | $700 May 25 | 0 | Med |
 10 | $471.73 | 2.9× | $468 May 4 | 0 | Low |
10$650.004.0×10$471.732.9×Prices are eBay-sold medians; last sale is the most recent single sale; sales count the last 30 days. Confidence reflects the full sale history behind each price — low-confidence rows rest on few sales, treat as directional.
Grade distribution
- PSA 1035030.8%
- PSA 940835.9%
- PSA 820017.6%
- PSA 7998.7%
- 6 & below817.1%
PSA population from our own psacard.com read, Aug 25, 2026. Half grades count toward the grade below (a 9.5 is a 9).
Grading edge
Grading edge
Buy raw, grade with PSA, sell as a slab. The upside if it grades PSA 10, after fee and turnaround.
Best case — the return if this card grades PSA 10, net of the $80.00 fee and a ~8-week turnaround haircut. PSA 10s happen about 31% of the time (the gem rate above); on a miss you roughly recover the raw cost.
Market
Supply & Demand
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.
Across HyperPotion
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