How much is the Onix 3/18 card (Southern Islands) worth?

As of September 23, 2026, the market value of Onix 3/18 is $59.34 ($59.34 on TCGplayer). This is an indicative price for a raw (ungraded) card in good condition; a PSA 10 sells for several times that amount.

Is the price of Onix going up or down?

Over the last 30 days the value moved by +8.6%.

Where can I buy Onix 3 below market value?

Kardz compares live eBay listings from 8 countries (US, UK, Germany, France, Italy, Spain, Canada, Australia) and flags those sold below the market median, raw or graded PSA / CGC. 7-day free trial.

Kardz›Pokémon prices›Southern Islands›Onix 3

Onix 3/18 price – Southern Islands

Name: Onix 3/18 - Southern Islands
Brand: Pokémon
SKU: si1-3
Availability: InStock

Onix, card 3 of 18 of the Southern Islands set, Wizards (1999-2003). Market value tracked on September 23, 2026.

Market value (raw card)

$59.34≈ €52.00

+8.6% over 30 days

SetSouthern Islands

Number3 / 18

IllustratorKeiko Fukuyama

TypeFighting

EraWizards (1999-2003)

Data points43 day(s) of history

Value = TCGplayer market price (average of recent sales, raw card). It is not an eBay price: a raw card can sell 20-40 % lower there, and a PSA 10 several times higher.

See what it really sells for on eBay →

As of September 23, 2026, the Onix 3/18 card from Southern Islands is worth $59.34 raw. TCGplayer market price, pulled daily by Kardz; 30-day change: +8.6%.

Is this card worth grading?

Raw value: $59.34. Work out what a PSA 10 or CGC 10 would net you after grading fees, shipping and eBay fees.

Run the grading profit calculator →

What is your Onix worth? Raw, PSA 9, PSA 10, CGC 10: not the same price.

Kardz compares live eBay listings from 8 countries for Onix 3/18: market median, recent graded sales, price gap between countries, and listings sold below market. Scan the card with your phone, answer in 3 seconds.

Real eBay prices, not just the US price guide
Raw / PSA 9 / PSA 10 / CGC 10 separated, with the number of sales
Alert when a listing drops below market

See eBay listings for Onix 3

How to read the price of Onix 3/18

The value shown ($59.34) is TCGplayer's market price: the weighted average of recent sales of a raw (ungraded) copy. It is the most used reference among Southern Islands collectors because it relies on real transactions and is recalculated every day.

Three things make it vary for a specific copy: condition (clean centering and sharp corners command a premium, a played card sells at a discount), version (holo, reverse holo, 1st edition, language) and marketplace (the same card does not sell for the same price on eBay.com, eBay.co.uk and eBay.de). For Onix, a PSA 10 or CGC 10 grade can multiply the price by 3 to 10 depending on how rare the grade is.

Before selling or buying, compare the value with completed sales on the market where you will actually trade. That is exactly what Kardz does: eBay listings and sales from 8 countries, sorted by condition and grade, with the median and the listings below market. Further reading: how to find the value of a Pokémon card and PSA or CGC, which grade to choose.