Set Guide
Rarest & Most Expensive Cards in Pokemon Boundaries Crossed
Black Kyurem-EX #145 is the most expensive Pokemon Boundaries Crossed card at about £675.86. The rarest cards are the set's 4 Secret Rares. Released 7 November 2012, the set has 153 cards, ranked below by market price and by printed rarity.
- Chase card
- Black Kyurem-EX #145
- £675.86
- Cards worth £10+
- 23 of 153
- priced cards
- Median card
- £0.49
- per priced card
- Top rarity tiers
- 4 Secret Rare
- 9 Ultra Rare
- 47 Rare
This page contains eBay Partner Network affiliate links. If you click an eBay link and make a qualifying purchase, we may earn a commission at no extra cost to you.
Top 10 most expensive Boundaries Crossed cards
Prices as of 22 October 2026.
#1 Most Expensive
Kyurem #145
Ultra Rare
A Dragon-type card with 180 HP. One listed attack is Dragon Fang (60 damage).
£675.86
Source: $900.96 from tcgplayer market
Provider updated 15 October 2026
Shop this card
#2 Most Expensive
Kyurem #146
Ultra Rare
A Dragon-type card with 180 HP. One listed attack is Dragon Stream (60 damage).
£409.37
Source: $545.71 from tcgplayer market
Provider updated 15 October 2026
Shop this card
#3 Most Expensive
Altaria #152
Secret Rare
This extremely rare Pokémon is a different color than usual. It is very hard to find.
£225.01
Source: $299.95 from tcgplayer market
Provider updated 15 October 2026
Shop this card
#4 Most Expensive
Skyla #149
Ultra Rare
Illustrated by Kanako Eo.
£166.00
Source: $221.29 from tcgplayer market
Provider updated 15 October 2026
Shop this card
#5 Most Expensive
Bianca #147
Ultra Rare
Illustrated by Megumi Mizutani.
£157.54
Source: $210.01 from tcgplayer market
Provider updated 15 October 2026
Shop this card
#6 Most Expensive
Golurk #150
Secret Rare
This extremely rare Pokémon is a different color than usual. It is very hard to find.
£153.95
Source: $205.22 from tcgplayer market
Provider updated 15 October 2026
Shop this card
#7 Most Expensive
Keldeo #142
Ultra Rare
A Water-type card with 170 HP. One listed attack is Secret Sword (50 damage).
£110.88
Source: $147.81 from tcgplayer market
Provider updated 15 October 2026
Shop this card
#8 Most Expensive
Terrakion #151
Secret Rare
This extremely rare Pokémon is a different color than usual. It is very hard to find.
£107.87
Source: $143.80 from tcgplayer market
Provider updated 15 October 2026
Shop this card
#9 Most Expensive
Cresselia #143
Ultra Rare
A Psychic-type card with 170 HP. One listed attack is Psychic Protection (90 damage).
£91.56
Source: $122.05 from tcgplayer market
Provider updated 15 October 2026
Shop this card
#10 Most Expensive
Celebi #141
Ultra Rare
A Grass-type card with 110 HP. One listed attack is Wind Whisk (60 damage).
£83.13
Source: $110.82 from tcgplayer market
Provider updated 15 October 2026
Shop this card
Top 10 rarest Boundaries Crossed cards
The highest listed tier in Boundaries Crossed is Secret Rare, with 4 of the 10 cards in the rarity shortlist. The remaining 6 cards appear across 1 lower printed rarity category. Printed rarity is a checklist category, not a measured pull rate or population count.
Printed rarity labels were captured 29 October 2026.
- #1
Altaria #152Secret Rare
£225.01
- #2
Golurk #150Secret Rare
£153.95
- #3
Terrakion #151Secret Rare
£107.87
- #4
Rocky Helmet #153Secret Rare
£28.51
- #5
Black Kyurem-EX #145Ultra Rare
£675.86
- #6
White Kyurem-EX #146Ultra Rare
£409.37
- #7
Skyla #149Ultra Rare
£166.00
- #8
Bianca #147Ultra Rare
£157.54
- #9
Keldeo-EX #142Ultra Rare
£110.88
- #10
Cresselia-EX #143Ultra Rare
£91.56
What Boundaries Crossed cards are worth
Black Kyurem-EX is the chase card at about £675.86, roughly 25% of the combined value of the 153 priced cards in the set. 23 cards are worth £10 or more, and the median card is worth about £0.49, so most of a set's value sits in a handful of pulls.
Usable price data is available for 153 of 153 cards in the set checklist. Within the top 10, Black Kyurem-EX is about 8.1 times Celebi-EX, the lowest-priced card shown, when compared in GBP. These are market indicators for a watchlist, not guaranteed sale prices.
How we rank these cards
Price ranking: For each card, we use the first available value in this order: TCGplayer market, mid, then low; if none is available, Cardmarket trend, 7-day average, then 30-day average. We convert USD and EUR values to GBP using the latest daily reference exchange rates before comparing them. Price changes compare our own daily GBP snapshots over the last 30 days.
Rarity ranking: We order the checklist by printed rarity label: Special Illustration Rare, Mega Hyper Rare, Hyper Rare, Secret Rare, Illustration Rare, Ultra Rare, Double Rare, Holo Rare, Ace Spec Rare, Shiny Rare, Trainer Gallery, Gallery Rare, Promo, other Rare, Uncommon, then Common. Cards in the same tier are ordered by market price, highest first. Printed rarity does not measure pull odds, print runs or graded population.
Converted values are comparison estimates; check the marketplace listing for its current price, condition, shipping and availability.