Phosphor Jellyfish Value
Phosphor Jellyfish is a legendary medium tier hammer from the Summer set in Flee the Facility. The community value is 65, which makes it the 17th most valuable of 458 tracked items and about 3.4x the Summer set average of 19.1.
- Value
- 65
- Demand
- 2.5/5 · Below average
- Rarity
- Legendary
- Set
- Summer
- Trend
- Stable
- Updated
- 2026-08-31
The matching gemstone
Phosphor Jellyfish was released alongside Phosphor Fish gemstone, which this value list does not track. The two halves of a pair trade separately, so one being cheap says nothing about the other.
Fair 1-for-1 trades for Phosphor Jellyfish
Items within 10% of Phosphor Jellyfish's value, closest match first.
| Item | Rarity | Value | Difference |
|---|---|---|---|
 Pearl Piercer | Legendary | 65 | +0 |
 Soulless Theater | Legendary | 65 | +0 |
 Strawberry Fields | Legendary | 65 | +0 |
 DarkBone Crusher | Legendary | 70 | +5 |
 DevilBorn | Legendary | 60 | -5 |
 Kraken's Ambush | Legendary | 60 | -5 |
 Merry Music Box | Legendary | 60 | -5 |
Trade up from Phosphor Jellyfish
The next items above it on the value ladder.
| Item | Rarity | Value | You add |
|---|---|---|---|
| DarkBone Crusher | Legendary | 70 | +5 |
 Psycho Chainsaw | Legendary | 75 | +10 |
 Classic | Legendary | 90 | +25 |
 Batwing Basher | Legendary | 90 | +25 |
 Bleak Ink | Common | 105 | +40 |
 Cherry Blossom | Legendary | 110 | +45 |
Trade down from Phosphor Jellyfish
What sits just below it if you are taking a downgrade plus adds.
| Item | Rarity | Value | They add |
|---|---|---|---|
| DevilBorn | Legendary | 60 | -5 |
| Kraken's Ambush | Legendary | 60 | -5 |
| Merry Music Box | Legendary | 60 | -5 |
 Chilly Sweets' Vend | Legendary | 55 | -10 |
 Ghost | Common | 55 | -10 |
 Hollow Christmas | Legendary | 50 | -15 |
More Summer items
Ice-Cream
SummerPearl Piercer
SummerKraken's Ambush
SummerChilly Sweets' Vend
Summer
Choco Dip
Summer
Sandcastle
Summer
Watergun
Summer
Ice Cream Pot
SummerHow this value is set
Values on this page are community estimates collected from Flee the Facility traders, not official Roblox prices. Phosphor Jellyfish was last reviewed on 2026-08-31. Demand matters as much as raw value: a high-value item with low demand can sit unsold for weeks, while a mid-tier item with steady demand moves quickly. Always compare both sides of a trade before you accept.