How much is Mega Slowbro ex worth?

It depends on the printing. The Pitch Black Double Rare (#31) sells for about $0.58 (TCGplayer market prices, Oct 12, 2026).

How many Mega Slowbro ex cards are there?

1 card: Pitch Black #31 (Double Rare).

Which Mega Slowbro ex is the rarest?

Of the printings we have measured odds for, Pitch Black #31 (Double Rare) is the hardest to pull: about 1 in 48 packs, assuming every card of its rarity is equally likely.

Mega Slowbro ex cards: every printing, price, and odds

1Printings1 set
$0.58Most valuablePitch Black #31
1 in 48Hardest to pullPitch Black #31

Every Mega Slowbro ex card

Newest set first. Odds are per pack, for sets we have verified openings for.

Card	Set	Market price	Odds per pack
Mega Slowbro ex#31 · Double Rare	Pitch BlackJul 17, 2026	$0.58	1 in 48

Side by side

Pitch Black #31Double Rare · $0.58

Quick answers

How much is Mega Slowbro ex worth?: It depends on the printing. The Pitch Black Double Rare (#31) sells for about $0.58 (TCGplayer market prices, Oct 12, 2026).
How many Mega Slowbro ex cards are there?: 1 card: Pitch Black #31 (Double Rare).
Which Mega Slowbro ex is the rarest?: Of the printings we have measured odds for, Pitch Black #31 (Double Rare) is the hardest to pull: about 1 in 48 packs, assuming every card of its rarity is equally likely.
What set is Mega Slowbro ex in?: Pitch Black (Jul 17, 2026).

Prices: TCGplayer market price, Oct 12, 2026. Pull odds come from verified pack openings; see each set's page for its sources. Card images are shown for identification. Not in search results until it has: two priced printings.