![Brock's Onix [1st Edition] #21 Pokémon Card from Pokemon Gym Heroes Set](https://images.pokemontcg.io/gym1/21_hires.png?v=236275)
Brock's Onix [1st Edition] #21
Set: Pokemon Gym Heroes
Raw Market Price
$10.00
47 sales per month
PSA 10
$87.13
771.3% vs Raw
PSA 9
$22.82
128.2% vs Raw
Total PSA Population
269 cards
PSA 10 Price Difference
771.3%
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