What is the most expensive Onix card?

Onix 3/18 from Southern Islands, at about $59.79.

How many Onix cards are there?

We track 29 Onix cards across 27 Pokémon TCG sets, including tag teams and owner variants.

Every Onix card in the Pokémon TCG we track: 29 cards from 27 sets, sorted by market price, each linked to its price history and its set.

Cards29

Sets27

Most valuable$59.79

Cheapest$0.10

Card	Set	Rarity	Price
Onix 3/18	Southern Islands	Common	$59.79
Brock's Onix 21/132	Gym Heroes	Rare	$8.77
Onix 98/186	Aquapolis	Common	$7.90
Onix 42/116	FireRed & LeafGreen	Uncommon	$2.82
Onix GX 36/69	Hidden Fates	Ultra Rare	$2.62
Brock's Onix 69/132	Gym Heroes	Common	$1.72
Onix 69/111	Team Rocket Returns	Common	$1.10
Onix 69/111	Neo Genesis	Common	$1.10
Onix 84/130	Base Set 2	Common	$1.04
Onix 56/102	Base Set	Common	$1.03
Onix 71/100	Sandstorm	Common	$1.01
Onix 65/117	Unseen Forces	Common	$0.89
Onix 61/122	Plasma Freeze	Uncommon	$0.65
Onix 56/96	Unleashed	Common	$0.58
Onix 84/110	Legendary Collection	Common	$0.57
Onix 69/106	Stormfront	Common	$0.44
Onix 92/130	Diamond & Pearl	Common	$0.40
Onix 57/96	Unleashed	Common	$0.35
Onix 109/236	Lost Thunder	Common	$0.33
Onix 71/183	Celestial Storm	Common	$0.24
Onix 61/113	Evolutions	Common	$0.21
Onix 105/271	Cosmic Eclipse	Common	$0.20
Onix 095/207	151	Uncommon	$0.19
Onix 138/284	Fusion Strike	Common	$0.19
Onix 103/258	Unified Minds	Common	$0.18
Onix 070/188	Mega Evolution	Common	$0.13
Onix 036/88	Pokémon GO	Common	$0.13
Onix 68/183	Battle Styles	Common	$0.13
Onix 090/266	Paradox Rift	Common	$0.10

What is the most expensive Onix card?: Onix 3/18 from Southern Islands, at about $59.79.
How many Onix cards are there?: We track 29 Onix cards across 27 Pokémon TCG sets, including tag teams and owner variants.
What is the cheapest Onix card?: Onix 090/266, at about $0.10.

Prices come from TCGplayer and Cardmarket via TCGdex, in US dollars.