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Brock's Onix 21

Brock's Onix 21

Gym Heroes · Rare · #21

£7.45

HoloHawk · live UK market

-33.0%1D
+17.3%7D
-19.5%30D

Live deals

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Looking for confirmed deals on this card…

Find this on eBay UK
Raw · ungraded£7.45 PSA 10£179 PSA 9£17.87 CGC 10£9.38 BGS 10£233

UK sellers only. Opens eBay in a new tab.

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Prices by grade

PSA 10 = 24.0× raw

Today's figures for every tier. Raw is the HoloHawk price above; graded tiers are PriceCharting, converted to GBP.

Raw · ungraded£7.45
PSA 10£179
PSA 9£17.87
CGC 10£9.38
BGS 10£233

A PSA 10 sells for 24.0× the raw card — a gap of £171. Grading fees and the risk of a 9 come out of that.

At a glance

30-day high£11.12
30-day low£6.34
Tracked high£11.12
Days tracked197
IllustratorBenimaru Itoh
Pokédex95

Price history

131 readings · 197d
£7.45+17.3%HoloHawk£6.50+7.4%PriceCharting£8.38-10.1%PulseTCG
21 Oct23 Oct23 Oct24 Oct24 Oct28 Oct
£7.45-24.1%HoloHawk£6.50-0.6%PriceCharting£8.38-10.1%PulseTCG
27 Sept28 Sept29 Sept11 Oct12 Oct27 Oct
£7.45-27.5%HoloHawk£6.50+8.9%PriceCharting£8.38-10.1%PulseTCG
14 Apr11 May10 Jun6 Jul1 Aug28 Oct
Three independent readings on one scale. A reading is recorded only when a price changes, so a flat stretch means it held. Hover or tap any day.

Graded price history

PSA 10 · £179
£179+96.3%PSA 10£17.87+7.5%PSA 9£9.380.0%CGC 10£233+96.2%BGS 10
14 Apr11 May10 Jun6 Jul1 Aug28 Oct
Graded prices from PriceCharting, in GBP. PSA 10 has been tracked since April 2026; the other tiers began recording 3 August 2026 and join the chart as their history builds.

New listings per day

1 today

How many new UK listings appear for this card each day. Rising supply against a falling price is the clearest sell signal there is. This counts what we saw, so it is a sample of the market rather than a total.

12 Aug6 Sept1 Oct26 Oct
New UK listings we saw appear each day. A direct count of what the scanner observed, not an estimate of everything on eBay. Source: HoloHawk, observed directly on eBay UK.

Confirmed sales per day

Building
How often this card actually sells We record roughly 4,600 UK auction outcomes a day across the catalogue. This charts how many close with a winning bid, day by day, from the first confirmed sale for this card.

Only auctions that finished with a bid count. A listing vanishing is not proof of a sale, so it is not counted as one.

Recent confirmed sales

Recording live
No confirmed sales for this card yet We log every UK auction that closes with a winning bid — around 4,600 a day across the catalogue. The first result for this card appears here as soon as one sells.

On sale now in the UK

2 live

Fixed-price listings we are currently tracking, cheapest first. Asking prices, not sales, and a sample of what is listed rather than everything on eBay. Each row opens the listing on eBay — HoloHawk earns a commission on purchases made through it, and it never changes the price you pay.

ListingCondition Ask
Pokémon TCG Brock's Onix Gym Heroes 21/132 Regular Unlimited RarUngraded£5.00
Brock's Onix 21/132 Gym Heroes 2000 Unlimited Rare Non-Holo PokéUngraded£8.66
Where these numbers come from

Three independent readings, shown side by side rather than blended into one figure:

HoloHawk Our own market price, from live UK listings
PriceCharting Published reference price, USD converted to GBP
PulseTCG Published reference price, natively GBP

A reading is stored only when a price actually changes, so flat stretches mean the price held — not that data is missing. Where a source has no history for an item its line is absent rather than flat. Confirmed sales are UK auctions that closed with a winning bid, observed within three minutes of close, so each is a lower bound. Live listings are asking prices, not sales. Supply and sales counts are direct observations — listings we saw appear and auctions we saw close with a bid. We do not infer that a listing sold because it disappeared, so nothing here depends on that guess.

Also in Gym Heroes

Sabrina's Gengar 14 1st Edition £1,146
Blaine's Moltres 1 1st Edition £318
Lt. Surge Theme Deck £300
Brock Theme Deck £288
Sabrina's Gengar 14 £280