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  6. Underground Idol Debut? Ruby

Weiß Schwarz · [OSHI NO KO] · #OSK/S107-E039 R · Rare

Underground Idol Debut? Ruby

Weiß Schwarz card price for Underground Idol Debut? Ruby: $0.23 market, from $0.10 at the cheapest listing, Normal printing, updated Oct 17, 2026. Full price history since Sep 21, 2024 below.

Market price · Normal · Oct 17, 2026
$0.23
0.0% this week · +27.8% in 30 days
Buy on eBay →
1 day0.0%
7 days0.0%
30 days+27.8%
90 days+27.8%
1 year+53.3%
All time−20.7%

Sellers right now

$0.10lowest listing$0.50highest
Market price$0.23
Mid listing$0.25
30-day avg$0.20

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$0.23

One year

$0.1252-week low$0.2352-week high
In the range100%
All-time low$0.07
All-time high$0.29
First priceSep 21, 2024
Normal · market price
$0.07$0.15$0.23$0.31
$0.23
Sep 2024May 2025Feb 2026Oct 2026
TCGplayer market price · via tcgcsvtcgrate.com

Price story

Underground Idol Debut? Ruby was released in September 2024. Launch-week prices are left out here: before supply arrives they are mostly guesses. Over the past twelve months it moved +53.3%, trading between $0.12 and $0.23. The current price is near the top of that range. The cheapest listing right now is $0.10, and the 30-day average market price is $0.20.

Printings

PrintingMarketLowHigh7d
Normal$0.23$0.10$0.500.0%

The card in play

Level1
Cost0
Power4500
Color
Red
Card type
Character
Trait
Show Business
Soul
1
Trait 2
Idol
Ability

[AUTO] When this card attacks, if you have another "Show Business" character, this card gets +1500 power until end of turn.

[AUTO] Memory When this card attacks, if ""B-KOMACHI" Ai" is in your memory, this card gets +500 power until end of turn, and reveal the top card of your deck. If that card is "Mask of Revenge, Aqua" or level 2 or higher, put it into your stock. (Otherwise, return it to its original place. Climax are regarded as level 0)

Other printings of Underground Idol Debut? Ruby

1 more · $0.23 – $1.59
All printings
Underground Idol Debut? Ruby (SR) (OSK/S107-E039S SR), [OSHI NO KO] — Weiß Schwarz card price +3.3% 7d Underground Idol Debut? Ruby (SR) [OSHI NO KO] · #OSK/S107-E039S SR $1.59

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