Question 1

How much is Gum-Gum Jet Spear ST13-018 worth?

Accepted Answer

Gum-Gum Jet Spear ST13-018 from The Three Brothers (ST-13) sells for €0.10 in Europe and $0.22 in the US, as of 3 November 2026.

Question 2

Is Gum-Gum Jet Spear ST13-018 going up or down in price?

Accepted Answer

Down. Over 30 days, since 6 October 2026, its Cardmarket price has fallen 38%, from €0.16 to €0.10.

Question 3

Why is Gum-Gum Jet Spear ST13-018 priced differently in Europe and the US?

Accepted Answer

Cardmarket and TCGplayer are separate markets with their own sellers, buyers and supply. In the US it sells for $0.22 on TCGplayer, about €0.20, which is 96% higher than its €0.10 on Cardmarket. Prices are converted at the European Central Bank’s reference rate for the same day.

Question 4

Where does this price come from?

Accepted Answer

The European price is Cardmarket’s trend price, their daily estimate of what the card sells for now, from real sales. The US price is TCGplayer’s market price, from recent completed sales. Binderlist collects both every night and keeps each day’s price.

Question 5

What is the most valuable card in The Three Brothers (ST-13)?

Accepted Answer

Monkey.D.Luffy (Parallel) ST13-003 at €42.90 on Cardmarket, as of 3 November 2026.

Set	The Three Brothers (ST-13)
Number	ST13-018
Rarity	Common
Released	19 April 2024

Gum-Gum Jet Spear ST13-018 price

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Questions and answers

How much is Gum-Gum Jet Spear ST13-018 worth?

Is Gum-Gum Jet Spear ST13-018 going up or down in price?

Why is Gum-Gum Jet Spear ST13-018 priced differently in Europe and the US?

Where does this price come from?

What is the most valuable card in The Three Brothers (ST-13)?

Most valuable in The Three Brothers (ST-13)