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Vanguard · G-TCB02: The GENIUS STRATEGY · #G-TCB02/039EN · Rare

Problem Child, Greybelly

Vanguard card price for Problem Child, Greybelly: $0.85 market, from $0.72 at the cheapest listing, Normal printing, updated Oct 19, 2026. Full price history since Feb 8, 2024 below.

Market price · Normal · Oct 19, 2026
$0.85
−1.2% this week · +1.2% in 30 days
Buy on eBay →
1 day−1.2%
7 days−1.2%
30 days+1.2%
90 days+6.3%
1 year+80.9%
All time+60.4%

Sellers right now

$0.72lowest listing$5.02highest
Market price$0.85
Mid listing$1.00
30-day avg$0.85

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

One year

$0.4752-week low$0.8652-week high
In the range97%
All-time low$0.47
All-time high$1.10
First priceFeb 8, 2024
Normal · market price
$0.80$0.82$0.84$0.87
$0.85
Jul 21Aug 20Sep 19Oct 19
TCGplayer market price · via tcgcsvtcgrate.com

Price story

Our price record for Problem Child, Greybelly begins in February 2024 at $0.53; the market price today is $0.85, up 60.4% since then. In the last year the price changed +80.9% and ranged from $0.47 to $0.86, and it now trades near the top of that range. Its all-time high in our data is $1.10, still 29.4% above the current price. The cheapest listing right now is $0.72, and the 30-day average market price is $0.85.

Printings

PrintingMarketLowHigh7d
Normal$0.85$0.72$5.02−1.2%

The card in play

Power9000
Nation
Zoo
Clan
Great Nature
Race
High Beast
Grade
2
Unit
Normal
Shield
5000
Critical
1
Skill Icon
Intercept
Flavor

I won't be diligent and well-mannered!

Card text

[AUTO](RC): Success 20000 (When your rear-guard's [Power] becomes 20000 or greater, this unit becomes successful until end of turn)

[AUTO](RC)[1/Turn] Generation Break 1: [Soul Blast (1)] When this unit is successful and attacks a vanguard, if you have a vanguard with "Bigbelly" in its card name, you may pay the cost. If you do, choose up to two of your other rear-guards, and until end of turn, they get [Power]+4000, and "[AUTO](RC):At the end of your turn, draw a card, and retire this unit.".

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