Pokémon sets › XY Black Star Promos › Mega Diancie EX
Mega Diancie EX #XY44
Medium confidence 123rd most valuable of 184 priced cards in XY Black Star Promos
Solid guide price from market data — liquid, well-sampled card.
Priced against the UK market and refreshed weekly — adjusted where UK collectors reliably pay above the US average. We have not yet seen enough recent UK activity for this card to read it directly.
A PSA 10 of this card sells for about 9.3× the ungraded price — £8.34 raw against £77.90 graded.
Peaked at £12.07 in July 2026; lowest £8.34 in August 2026. PSA 10 moved -34.8% over a comparable period.
UK price month by month
| Month | UK ungraded |
|---|---|
| June 2026 | £11.05 |
| July 2026 | £12.07 |
| August 2026 | £8.34 |
UK guide prices, with the US market alongside — updated 30 August 2026. Each market is priced from real market data in that market. Estimates for collection tracking — not an appraisal or a quote.
Check recent UK sold prices on eBay →
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