Professor Birch's Observations
| ebay.nl | n=4 | £12.43 | +67% |
| ebay.de | n=34 | £11.00 | +48% |
| ebay.co.uk | n=19 | £9.96 | +34% |
| ebay.es | n=25 | £8.88 | +19% |
| ebay.it | n=12 | £8.87 | +19% |
| ebay.com | n=100 | £7.43 | — |
How is this value calculated?
Recency-weighted trimmed median of 24 NM sales (RAW; outliers trimmed against the median, newer sales weigh more, dynamic half-life).
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 24 | 29 d | £14.63 | 195.92 |
| eigene LP-Verkäufe ÷ 0.873 | 36 | 14 d | £14.63 | 3.03 |
| eigene PSA9-Verkäufe ÷ 5.865 | 3 | 4 mo | £6.05 | 2.56 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 2 | 42 d | £46.68 | 16.33 |
| en roh NM × 1.4515 (Sprach-Faktor aus 33 Karten) | 24 | 29 d | £21.24 | 2.45 |
Measured error for this era×language (backtest): ±43 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.2403 (Sprach-Faktor aus 19 Karten) | 24 | 29 d | £18.15 | 2.35 |
Measured error for this era×language (backtest): ±12 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.0872 (Sprach-Faktor aus 35 Karten) | 24 | 29 d | £15.91 | 13.37 |
Measured error for this era×language (backtest): ±14 %
Gate not green — shown only here, never as the price.
No PSA numbers for this print yet — in any language.
Frequently asked questions
Is it worth grading Professor Birch's Observations Primal Clash 159/160?
A PSA 10 currently sells for about £1,120, raw the card sits at £14.63 — 76,6× as much. Of 294 copies already graded, 4 % received a 10 and 17 % a 9. Mathematically, submitting returns £110.97 on average, before fees and shipping. Rule of thumb: submit when the value at a realistic grade is at least double the raw value — which is the case here. Centering decides it: an off-centre card will not get a 10. The grade distribution comes from the PSA Population Report; people pre-sort before submitting, so your own hit rate may differ.
Auction or Buy It Now — which gets more for Professor Birch's Observations Primal Clash 159/160?
Across 15 auctions the median was £5.08, across 98 fixed-price sales £8.89. Fixed price therefore fetched about 75 % more — for this card patience with a set price is the better route.
What will I get for Professor Birch's Observations Primal Clash 159/160 if I want to sell quickly?
Half of all sales fell between £6.35 and £11.91, with a median of £8.46. Selling fast lands you nearer the lower end; with patience, good photos and a complete title the upper end is achievable.
Below which price is an offer for Professor Birch's Observations Primal Clash 159/160 unrealistic?
The cheapest genuine sales were around £4.87. Offers well below £2.92 are typically fakes, mislabelled cards or a different variant — ask for photos of all four borders and a close-up of the surface.
How does lastsold determine the market value?
lastsold uses only real sales — eBay plus auction houses like Goldin & Fanatics — recent sales count more (recency weighting), outliers and fakes are removed. It's not an estimate but actual sold prices, separated by condition, language and grading.