Professor Birch #89, Normal, EX Ruby & Sapphire
- RS

- ·Card number: #89/109
- ·Rarity: Uncommon
- ·Finish: Non-Holo
A PSA 10 Professor Birch #89 Normal from EX Ruby & Sapphire has a TCGBerg fair value of $147 as of Nov 13, 2026. It rests on 2 recorded sales, the latest on Sep 21, 2026. PSA has graded 5 copies at PSA 10. Sales evidence is sparse, so treat this value as a rough estimate.
TCGBerg Algorithm (estimated from recorded sales).
2 sales · latest Sep 21, 2026
- Population · PSA 10
- 5
- Market cap
- $737
- Volatility
- 4.0%
- YTD
- ↑ 47.4%
- Sales evidence
- Sparse
TCGBerg fair value · PSA 10
$147
Based on 2 recorded sales. Latest sale: Sep 21, 2026.
Price history
Weekly fair value over time, plus a confidence band around it: how precisely we can pin the value, which tightens as more sales confirm it. Dots mark individual sales, snapped to their week: red when above fair value (a premium), green when below (a deal), hollow when flagged as an outlier. Switch the active grade with the selector above.Weekly fair value for PSA 10. Shaded area is the confidence band: how precisely we can pin the value; it tightens as more sales confirm it. Dots are individual sales. Confidence band: how precisely we can pin the fair value. It widens when sales scatter and narrows as more sales back the value up. The dots show the actual sale prices.
What the evidence says
The last PSA 10 sale, $100 on Sep 21, 2026, sits 32.1% below the $147 fair value. The value rests on 2 recorded PSA 10 sales. With so few PSA 10 sales on record, a single sale can sit far from the value. Its confidence band runs from $110 to $184. A PSA 10 ($147) is worth 5.0 times a PSA 9 ($30). Over the past 30 days the PSA 10 value has risen 11.0%. With sparse sales evidence, read the gap and the band as rough guides.
TCGBerg fair value by grade
Side-by-side comparison of value across every grade and ungraded condition we track for this printing. The bar chart uses a log scale so raw and gem-mint fit on one axis. Solid bars are the TCGBerg fair value, modelled from recorded sales. Hatched bars are the latest market price instead, shown for ungraded conditions that trade too rarely for us to price one honestly.Value at each grade and ungraded condition. Log scale. Tap a row to switch the whole page.
- Raw NM$0.36Ungraded · TCGBerg fair value
- Raw LP$0.33Ungraded · TCGBerg fair value
- Raw Damaged$0.24Ungraded · TCGBerg fair value
- Raw HP$0.23Ungraded · market price
- Raw MP$0.20Ungraded · TCGBerg fair value
Behind the scenes
How the published fair value for this grade was produced: the sales it rests on, how they were put together, and every recorded change afterwards. It describes one saved calculation, not a live recomputation.What goes into this price, and how much we know.
Recent sales
14 trackedEach sale against the grade's fair value on the day it sold.
| Date | Grade | Venue | Price | vs fair value |
|---|---|---|---|---|
| Oct 29, 2026 | Raw | tcgplayer | $0.37 | above fair value by +2.8% |
| Oct 23, 2026 | Raw | tcgplayer | $0.37 | above fair value by +2.8% |
| Sep 29, 2026 | Raw | tcgplayer | $0.41 | above fair value by +13.9% |
| Sep 26, 2026 | Raw | tcgplayer | $0.25 | below fair value by -30.6% |
| Sep 21, 2026 | PSA10 | eBay | $100 | below fair value by -16.7% |
- $0.37Oct 29, 2026 · via tcgplayerRaw↑above fair value by 2.8%
- $0.37Oct 23, 2026 · via tcgplayerRaw↑above fair value by 2.8%
- $0.41Sep 29, 2026 · via tcgplayerRaw↑above fair value by 13.9%
- $0.25Sep 26, 2026 · via tcgplayerRaw↓below fair value by 30.6%
- $100Sep 21, 2026 · via eBayPSA10↓below fair value by 16.7%
| Sep 19, 2026 | Raw | tcgplayer | $0.70 | above fair value by +94.4% |
| Aug 25, 2026 | Raw | tcgplayer | $0.30 | below fair value by -16.7% |
| Aug 17, 2026 | Raw | tcgplayer | $1.74 | above fair value by +383.3% |
- $0.70Raw↑above fair value by 94.4%
- $0.30Raw↓below fair value by 16.7%
- $1.74Raw↑above fair value by 383.3%
9 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
↓Includes a sale 30.6% below fair value
All grades matrix
Every grade we track for this printing. Click any column header to sort; the rightmost column jumps you to listings for that grade.
- PSA10$1471d ·0.0%7d ·0.0%30d ↑11.0%
- Pop
- 5
- Mcap
- $737
- Evidence
- Sparse
- Last
- $100
- PSA9$301d ·0.0%7d ·0.0%30d ↑4.0%
- Pop
- 3
- Mcap
- $89
- Evidence
- Sparse
- Last
- $18
- PSA8$181d ·0.0%7d ·0.0%30d ↑2.5%
- Pop
- 3
- Mcap
- $55
- Evidence
- Sparse
- Last
- -
| Listings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PSA10 | $147 | 5 | $737 | 0.0% | 0.0% | ↑up 11.0% | ↑up 19.5% | Sparse | $1002mo ago | |
| PSA9 | $30 | 3 | $89 | 0.0% | 0.0% | ↑up 4.0% | ↑up 15.8% | Sparse | $182y ago | |
| PSA8 | $18 | 3 | $55 | 0.0% | 0.0% | ↑up 2.5% | ↓down 28.5% | Sparse | - | |
| PSA7 | $18 | 4 | $73 | 0.0% | 0.0% | ↑up 2.5% | ↓down 28.5% | Sparse | - | |
| PSA6 | $3.16 | 0 | - | ↓down 3.7% | ↓down 5.4% | ↑up 0.6% | ↑up 81.6% | Sparse | - | |
| Raw | $0.36 | - | - | - | 0.0% | 0.0% | - | Very strong | $0.372w ago |
PSA population report
How Professor Birch's graded copies are spread across grades. Each bar is the number of copies graded at that grade; the percentage is that grade's share of the total graded population. These are recorded graded copies, not the total print run. A smaller population alone does not establish a price premium.15 graded copies of Professor Birch Normal across 4 grades. The selected grade is highlighted.
PSA 10 makes up 33% of graded copies: 5 of 15. It’s the most common grade for this card.
Analysis
Professor Birch - Normal at PSA 10 carries a TCGBerg fair value of $147 as of 2026-11-13. We track a TCGBerg fair value across 5 grades from EX Ruby & Sapphire, from PSA 6 up to PSA 10. A graded population of 5 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on sparse sales evidence. Over the past 30 days, the PSA 10 TCGBerg fair value has risen 11.0%.