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Union Arena · UE20BT: That Time I Got Reincarnated as a Slime Release Event Cards · #UEPR/TSK-1-037 · Uncommon

Kaijin

Union Arena card price for Kaijin: $0.52 market, from $0.50 at the cheapest listing, Normal printing, updated Oct 20, 2026. Full price history since Sep 26, 2026 below.

Market price · Normal · Oct 20, 2026
$0.52
−8.8% this week · — in 30 days
Buy on eBay →
1 day0.0%
7 days−8.8%
30 days—
90 days—
1 year—
All time−8.8%

Sellers right now

$0.50lowest listing$7.99highest
Market price$0.52
Mid listing$0.65
30-day avg$0.56

Market price is what a near-mint copy actually sold for. The cheapest listing is what a seller asks today — on thin markets the two differ a lot.

Where to buy

TCGplayer$0.52

One year

$0.5252-week low$0.5752-week high
In the range0%
All-time low$0.52
All-time high$0.57
First priceSep 26, 2026
Normal · market price
$0.52$0.54$0.56$0.58
$0.52
Sep 26Oct 4Oct 12Oct 20
TCGplayer market price · via tcgcsvtcgrate.com

Price story

We started tracking Kaijin in September 2026; so far its market price is $0.52. The cheapest listing right now is $0.50, and the 30-day average market price is $0.56.

Printings

PrintingMarketLowHigh7d
Normal$0.52$0.50$7.99−8.8%

The card in play

Card text

[Activate: Main] (Switch to Resting) Choose one other character on your field. It gains 1000 BP until the end of the turn.

Other printings of Kaijin

1 more · $0.16 – $0.52
All printings
Kaijin (UE20BT/TSK-1-037), That Time I Got Reincarnated as a Slime — Union Arena card price +14.3% 7d Kaijin UE20BT: That Time I Got Reincarnated as a Slime · #UE20BT/TSK-1-037 $0.16

Also in UE20BT: That Time I Got Reincarnated as a Slime Release Event Cards

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Full set
Feast (096) (UEPR/TSK-1-096), That Time I Got Reincarnated as a Slime Release Event Cards — Union Arena card price 0.0% 7d Feast (096) UE20BT: That Time I Got Reincarnated as a Slime Release Event Cards · #UEPR/TSK-1-096 $6.81 Feast (062) (UEPR/TSK-1-062), That Time I Got Reincarnated as a Slime Release Event Cards — Union Arena card price 0.0% 7d Feast (062) UE20BT: That Time I Got Reincarnated as a Slime Release Event Cards · #UEPR/TSK-1-062 $6.25 Mystic Thread Strike (UEPR/TSK-1-065), That Time I Got Reincarnated as a Slime Release Event Cards — Union Arena card price −0.3% 7d Mystic Thread Strike UE20BT: That Time I Got Reincarnated as a Slime Release Event Cards · #UEPR/TSK-1-065 $6.19 Feast (056) (UEPR/TSK-2-056), That Time I Got Reincarnated as a Slime Release Event Cards — Union Arena card price −3.3% 7d Feast (056) UE20BT: That Time I Got Reincarnated as a Slime Release Event Cards · #UEPR/TSK-2-056 $6.14 Luminus (093) (UEPR/TSK-1-093), That Time I Got Reincarnated as a Slime Release Event Cards — Union Arena card price 0.0% 7d Luminus (093) UE20BT: That Time I Got Reincarnated as a Slime Release Event Cards · #UEPR/TSK-1-093 $5.82