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Professor's Research: Professor Sada 189

Professor's Research: Professor Sada 189 Reverse Holo

Scarlet & Violet · Rare · #189

The Reverse Holo printing — a separate card from the standard version.

£0.23

PriceCharting · converted to GBP

-4.2%1D
-4.2%7D
+9.5%30D
Find this on eBay UK
Raw · ungraded£0.23 PSA 10£23.10 PSA 9£7.84 CGC 10£14.04 BGS 10£30.30

UK sellers only. Opens eBay in a new tab.

HoloHawk earns a commission on eBay purchases through this link. It never changes the price you pay.

Prices by grade

Today's figures for every tier.

Raw · ungraded£0.23
PSA 10£23.10
PSA 9£7.84
CGC 10£14.04
BGS 10£30.30

At a glance

30-day high£0.24
30-day low£0.19
Tracked high£0.24
Days tracked141
IllustratorkirisAki

Price history

114 readings · 141d
HoloHawk awaiting data£0.23-4.2%PriceChartingPulseTCG awaiting data
26 Aug26 Aug28 Aug28 Aug2 Sept2 Sept
HoloHawk awaiting data£0.23+9.5%PriceChartingPulseTCG awaiting data
3 Aug4 Aug9 Aug18 Aug23 Aug2 Sept
HoloHawk awaiting data£0.23+53.3%PriceChartingPulseTCG awaiting data
14 Apr8 May3 Jun26 Jun18 Jul2 Sept
Three independent readings on one scale. A reading is recorded only when a price changes, so a flat stretch means it held. Hover for any day. HoloHawk and PulseTCG have no readings for this card yet.

Graded price history

PSA 10 · £23.10
£23.10+1.6%PSA 10£7.84+0.9%PSA 9£14.040.0%CGC 10£30.30+2.5%BGS 10
14 Apr8 May3 Jun26 Jun18 Jul2 Sept
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

Building
How much new stock hits the UK market each day The scanner records every new UK listing it sees — around 13,600 a day. This charts how many appear for this card once the daily rollup has readings for it.

A direct count of listings we saw appear — not an estimate of every listing on eBay.

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

Building
Live UK listings for this card The scanner records every new UK listing it sees — around 13,600 a day. This fills as soon as one appears for this card, showing asking prices cheapest first.
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 Scarlet & Violet

Arven 166 Regional Championships Staff £129
Gardevoir ex 245 £52.45
Drowzee 210 £40.65
Ralts 211 £29.39
Kirlia 212 £29.16