Identity checkMismatch
✓CardEX Sandstorm #73/100 · Rev Holo (1 of 2 printings)
✓Tracker matchPsyduck · EX Sandstorm · #73/100
✕Raw pricePulse $436.20 vs tracker $17.42 (-96%)
✓Gem rate3.6% · GemRate card search enrichment · this printing
!PSA 10 comp$488.37 · PokemonPriceTracker 90d · matched by product ID
!PSA 9 comp$55.44 · PokemonPriceTracker 90d · matched by product ID
!PSA 8 comp$38.36 · PokemonPriceTracker 90d · matched by product ID
Your grading resultsNone logged
Your results on this set: none graded yet
Your results on Vintage: none graded yet
Vintage grade odds use the starting assumptions until 5 Vintage grades are back.
Graded economics-92%
PSA 10$488.37PokemonPriceTracker 90d
PSA 9$55.44PokemonPriceTracker 90d
PSA 8$38.36PokemonPriceTracker 90d
Net EV−$482.43$42.84 net sale vs $525.27 cost
EV rangeEV range: -93% / -92% / -90% (pessimistic / expected / optimistic)Max buy: none (the pessimistic case can't return 20% at any price), with the card's value held at $436.20PSA 10 rate 2.2–6.0% (80% interval on 6 / 166); comps ±5.0% (comp quality 90). The 80% interval, the comp band and the ×0.5 / ×1.5 fallback without population counts are starting assumptions.
Outcome mix10 2% / 9 43% / 8 30% / ≤7 25%
PSA 10 ratePopulation 3.6% → adjusted 2.3% (Vintage, ×0.65 at $436 value, starting assumption)
Break-evenCan't break even at these prices
CostsRaw $436.20 + shipping $5.00 + grading $59.99 (expected) + submission shipping $6.00 + time cost $18.08 = $525.27Net sale after fees: PSA 10 $413.73 · PSA 9 $42.18 · PSA 8 $27.52 · ≤7 $27.52PSA tier: Standard $59.99; about 133 days at PSA. PSA and eBay fees from their official pages; eBay fees include 7% sales tax in their base; that, the shipping and the 10%/yr time cost are your assumptions (Settings).
Grade splitVintage split adjusted for this card's low PSA 10 rate (≤ 6.0% vs Vintage typical 6.4%): PSA 9 45% → 44%, starting assumption; ≤7 valued at 90% of raw
PSA 10/9 premium8.8x
PopulationPSA 10
Gem rate3.6%
PSA 10 pop6
Total pop166
SourceGemRate card search enrichment
PSA 10 velocity-
Total velocity-
SnapshotJun 22, 2026
Scarcity89/100
LabelStrong
Confidence96/100
Supply93/100
Demand76/100
Gem rate 3.6%PSA 10 pop 6/166PSA 10/9 premium 8.8xSupply constraint 93/100
Raw validationprice mismatch
TCG market$17.42
Pulse price$436.20
Delta-96%
CheckedSep 29, 2026
PsyduckPSA comps refreshed Sep 29, 2026PSA sales window 90 days
Signal context0
StatusNo active dashboard flag
Other printings of this card
*All-time high/low are within the tracked window (2024-03-08 - 2026-11-02). Raw, ungraded TCGplayer market price (blue) and cheapest listing (grey) via the free TCGCSV mirror. Personal, non-commercial prototype - not investment advice.