![Brock's Sandslash [1st Edition] #23](https://tcgplayer-cdn.tcgplayer.com/product/83983_200w.jpg)
Brock's Sandslash [1st Edition] #23
Pokemon Gym Heroes · #23 · 2000
STRONG BUY
Fundamentals181% Undervalued
OvervaluedFair ValueUndervalued
Momentum+96% Expected
DecliningFlatAppreciating
Our model estimates fair value at $53, suggesting this card is 181% undervalued at $19. Momentum is strong — the temporal model projects +96% over the next 12 months. Only 14 PSA 10s exist out of 150 graded (16.7% gem rate), making gem copies exceptionally scarce.
Value Thesis
Market Price$19
Fair Value$53(+181%)
12-Mo Price Target$37(+94%)
MomentumTrending Up
Gem Thesis
PSA 10 Price$38
Implied Grade 10 FV$60(+58%)
Grading Premium2.0x raw price
Gem Rate16.7%(150 graded)
Grade 10/9 Spread1.6x(9 at $24)
Price History
Price History
Fair Value Breakdown
| Base (avg card) | $3 |
| Character | +$17 |
| Rarity | +$15 |
| Other | +$13 |
| Set | +$4 |
| Artwork | +$1 |
| Nostalgia | $-1 |
| Fair Value | $53 |
Grading Population
PSA
1
0
2
1
3
0
4
0
5
4
6
4
7
4
8
26
9
35
10
14
Total Graded: 88Gem Rate: 15.9%
CGC
1
0
2
0
3
0
4
1
5
3
6
5
7
10
8
17
9
15
10
11
Total Graded: 62Gem Rate: 17.7%
Grade Prices
| Grade | Price | Premium |
|---|---|---|
| Grade 2 | $6 | 0.6x |
| Grade 3 | $7 | 0.7x |
| Grade 4 | $8 | 0.8x |
| Grade 5 | $9 | 0.9x |
| Ungraded | $10 | 1.0x |
| Grade 6 | $11 | 1.1x |
| Grade 7 | $14 | 1.4x |
| Grade 7 | $16 | 1.6x |
| Ungraded | $20 | 1.0x |
| Grade 8 | $20 | 2.0x |
| Grade 8 | $21 | 2.0x |
| SGC 10 | $22 | 2.1x |
| Grade 9 | $24avg last 3 | 2.3x |
| CGC 10 | $25 | 2.4x |
| Grade 9.5 | $25 | 2.4x |
| Grade 9 | $24avg last 3 | 2.3x |
| Grade 9.5 | $26 | 2.5x |
| PSA 10 | $38avg last 3 | 3.7x |
| CGC 10 Pristine | $45 | 4.4x |
| BGS 10 | $48 | 4.7x |
| PSA 10 | $38avg last 3 | 3.7x |
| BGS 10 Black | $240 | 23.4x |
Prices from PriceCharting estimates. Verify on eBay for live market data.
Data sourced from PriceCharting and TCGPlayer. Fair value computed via LOGO-CV machine learning model. Ratings updated monthly. View on PriceCharting