| ebay.co.uk | n=2 | £5.68 | +232% |
| ebay.com | n=21 | £1.71 | — |
How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 4 | 4 mo | £3.96 | 32.65 |
| eigene LP-Verkäufe ÷ 0.7158 | 4 | 51 d | £13.48 | 1.68 |
Measured error for this era×language (backtest): ±22 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 0.5695 (Sprach-Faktor aus 6 Karten) | 4 | 4 mo | £2.25 | 1.24 |
Measured error for this era×language (backtest): ±20 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.0288 (Sprach-Faktor aus 9 Karten) | 4 | 4 mo | £4.07 | 5.43 |
Measured error for this era×language (backtest): ±2 %
Gate not green — shown only here, never as the price.
No PSA numbers for this print yet — in any language.
| 2026-10-03 | EN | PSA 9 | 2006 POKEMON EX CRYSTAL GUARDIANS #20 GRUMPIG PSA 9 ✨ · eBay | £60.58 |
| 2026-09-27 | EN | RAW LP | Pokemon Grumpig 20/100 EX Crystal Guardians Stamped LP Mitsu · eBay | £12.02 |
| 2026-07-02 | EN | RAW UNKNOWN | Grumpig 20/100 Crystal Guardians Regular | £1.33 |
| 2026-07-01 | EN | RAW MP | Grumpig 20/100 Rare Crystal Guardians Pokemon Moderately Pla | £6.03 |
| 2026-06-26 | EN | RAW LP | Grumpig 20/100 EX Crystal Guardians Rare LP | £0.74 |
| 2026-06-25 | EN | RAW LP | Pokémon Grumpig EX Crystal Guardians 20/100 LP | £1.28 |
| 2026-06-24 | EN | RAW NM | Grumpig 20/100 Rare Crystal Guardians Pokemon NM/M | £1.87 |
| 2026-06-24 | EN | RAW UNKNOWN | Pokemon Grumpig #20/100 English Crystal Guardians 2006 Stamp | £11.82 |
| 2026-06-16 | EN | RAW LP | Grumpig Stamped | 20/100 Ex Crystal Guardians | Holofoil | L | £7.80 |
| 2026-06-16 | EN | RAW UNKNOWN | GRUMPIG 20/100 CRYSTAL GUARDIANS Rare Pokemon | £1.38 |
| 2026-06-07 | EN | RAW MP | 2006 Pokemon Crystal Guardians Stamped Holo Grumpig 20/100 R | £5.09 |
| 2026-06-02 | EN | RAW UNKNOWN | 2006 Miracle Crystal Unlimited Grumpig Stage 1/Rare #20 | £3.92 |
| 2026-05-18 | EN | RAW NM | Grumpig Stamped | 20/100 Ex Crystal Guardians | Holofoil | N | £8.55 |
| 2026-05-18 | EN | RAW UNKNOWN | Pokémon Grumpig 20/100 ENG Non Holo Rare EX Crystal Guardian | £4.65 |
| 2026-05-16 | EN | RAW MP | Pokemon Grumpig 20/100 EX Crystal Guardians Rare MP Vintage | £1.83 |
| 2026-05-10 | EN | RAW UNKNOWN | Grumpig 20/100 Rare EX Crystal Guardians Pokémon Card | £1.43 |
| 2026-05-07 | EN | RAW UNKNOWN | Grumpig 20/100 EX Crystal Guardians Rare Pokemon TCG | £0.72 |
| 2026-05-05 | EN | RAW UNKNOWN | Grumpig 20/100 Holo Ex Crystal Guardians Pokémon Card | £7.44 |
| 2026-05-04 | EN | RAW NM | Grumpig Rare Crystal Guardians 20/100 NM | £0.88 |
| 2026-05-04 | EN | RAW MP | Grumpig Rare Normal Crystal Guardians 20/100 MP | £1.80 |
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#091 · Frequently asked questions
What will I get for Grumpig Crystal Guardians 20/100 if I want to sell quickly?
Half of all sales fell between £1.43 and £6.03, with a median of £1.83. 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 Grumpig Crystal Guardians 20/100 unrealistic?
The cheapest genuine sales were around £0.88. Offers well below £0.53 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.