Bat Swarm icon, Legendary rarity item in Grand Piece Online

Bat Swarm BS

Tier B+ Legendary High demand Reliable

Current trading value

4.6K

Range 4.2K–5.1K

Window12h

UpdatedSep 10, 2026

Trades2,180
Offered715
Wanted1,465
Demand ×2.05

In stock from us

trade value per $1

Buy on PetMart

PetMart is our shop

Bat Swarm isn’t in stock. Ope trades near it4.5K, $3.09. PetMart is our shop

What Bat Swarm's value means

At 4.6K value units, Bat Swarm trades for roughly 0.46× a Mythical Fruit Chest (the 10,000-unit reference item), so it sits below the anchor on the chart.

That figure is a high-confidence read: the solver places the true value between 4.2K and 5.1K (a ±10% band) off 2,180 observed Discord trades.

Over the last week the value has been rising. The 7-day read sits +2.8% against the 30-day average.

In trade chats and value lists, Bat Swarm is also written BS.

Demand is currently rated High and rarity is Legendary, both recomputed every solver run.

How to get Bat Swarm

Dropped by
Moria, The Shadow King
Location
Thriller Bark
Drop rate
5%
Trade level
475+

Price history · 60 days

Per-day median across observed trades. Last point is today's solver run.

+64.5% / 60d
4,636

Recent Bat Swarm trades

The exact offers our pipeline parsed from Discord. No edits, no opinions.

  • Legendary Fruit Chest Bat Swarm seen 57×
  • Buddha Bat Swarm seen 28×
  • Bat Swarm Legendary Fruit Chest seen 27×

Most common trade shapes observed for Bat Swarm, from 361 solo-trade samples.

Trade recommendations

Auto-built from the value-matches graph. Verdicts use the same win/fair/lose math as the calculator.

FAIR

Bat Swarm for Katakuri (4.6K)

Within 2%. A clean even swap.

+1.8% delta

WIN

Bat Swarm for Ope (4.5K)

Bat Swarm's value tops Ope. Clean win on paper.

+2.1% in your favor

WIN

Bat Swarm for Buddha (4.5K)

Bat Swarm's value tops Buddha. Clean win on paper.

+3.2% in your favor

Flips with Bat Swarm

See all flips →

Trades that read fair to the other player but leave you ahead.

    Bat Swarm for Endbringer Armor, you gain +17% +17% Pika for Bat Swarm and Ope, you gain +21% +21% Goro and Legendary Fruit Chest for Bat Swarm, you gain +18% +18%

Compare Bat Swarm

All comparisons →
Browse all GPO values →

FAQ

How much is Bat Swarm worth in GPO?

Bat Swarm's current trading value is approximately 4.6K (range 4.2K-5.1K), based on 2,180 observed Discord trades over the last solver run. Updated 2026-09-10.

How do you get Bat Swarm in GPO?

Bat Swarm drops from Moria, The Shadow King. Drop rate: 5%. Location: Thriller Bark.

Is Bat Swarm's value rising or falling?

It's currently rising. The 7-day value sits +2.8% versus the 30-day average. That's the direction the solver sees over the past week.

How is Bat Swarm's value calculated?

Bat Swarm's value is derived purely from observed Discord trade messages using a ratio-chain solver against the Mythical Fruit Chest anchor (10,000 value units). No editor opinions, no hand-tuned numbers. See /legal/methodology for the full math.

Why is the value a range, not one number?

The range is a 90% confidence band. The single headline number is the median. The band shows where the solver thinks the true value lives given noise.