Mega Slowbro Ex

XY Promos · #263/78 · Common · 2013JPN

All 66 Slowbro cards ranked by value →
$38.75
Market price ▲ 0.0% (1Y)
Prices as of Aug 22, 2026
696graded pop
78%gem rate
5.7×PSA 10 vs raw
0%off ATH $30.00 · Aug 2026
Market data

Price history

Holofoil▲ 0.0% 7d
Low $129.99Mid $129.99High $129.99

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Graded market

Graded values

PSA 10 report →updated 2026-08-22
Grade 6 est.$28.50
Grade 5 est.$24.00
Grade 4 est.$19.80
Grade 3 est.$16.50
Grade 2 est.$13.50
Grade 1 est.$11.40

Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.

PSA 10 price history$219.75

PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.

Graded population census · updated 2026-08-09

PSA656 graded · 519 gem 10
CGC40 graded · 25 gem 10

Population data from PriceCharting, updated monthly.

More Slowbro cards all 66 ranked by value →

Dark Slowbro Legendary CollectionDark SlowbroLegendary Collection · 2002$44.73Slowbro AquapolisSlowbroAquapolis · 2003$98.15Dark Slowbro Team RocketDark SlowbroTeam Rocket · 2000$51.01Slowbro Unseen ForcesSlowbroUnseen Forces · 2005$44.45Slowbro FireRed & LeafGreenSlowbroFireRed & LeafGreen · 2004$50.00Light Slowbro Neo DestinyLight SlowbroNeo Destiny · 2002$40.32

How much is Mega Slowbro Ex #263/78 worth?

Right now (August 22, 2026) the going rate for an ungraded Mega Slowbro Ex #263/78 from XY Promos is about $38.75.

Grading changes the math on this one: a PSA 10 is valued around $219.75, roughly 5.7x the raw price. 656 copies have been graded to date, and 79% of them came back a 10 — worth knowing before you pay grading fees.

We update this valuation every night from live market data and verify it against real completed sales — see the chart above for how Mega Slowbro Ex has moved over time.

Collecting XY Promos?Full master set guide — every card, chase list, and completion cost→