Massed Flies Le Party Phantom

✦ Massed FliesUnusual1mo ago

This price has not changed since 2026-09-29 12:08 UTC. It reflects the last observed trade rather than current market value, and this page is excluded from our sitemap for that reason.

Sell price

112 keys, 16.22 ref

Buy price

97 keys, 39.22 ref

In keys

112 keys

In USD

$242.47 at the Steam key rate

Steam Market asking price

$322.43 asking, not sold · 2 listed

Community price on backpack.tf: 145–150 keys, last changed 2026-02-28 (8mo ago). The live quote above, 112 keys, is 23% lower and last moved 1mo ago. They are different measures: the quote is what traders and bots are asking and bidding on the classifieds right now, and it moves for thousands of items every day; the community price is a suggestion accepted by vote, which changes only when someone argues it should. A quote well away from the vote is usually a price that is about to be re-argued. Community prices from backpack.tf, read under an hour ago.

Steam Market asking price: $322.43 — the lowest of 2 listings for the Massed Flies effect when we looked on 2026-10-30 01:31 UTC (6d ago). This is what a seller is asking, not what anything sold for. Steam pays out in Steam wallet funds, not cash, and Valve takes roughly 15% at the till — so asking prices there run well above the 112 keys, 16.22 ref shown above, which comes from the keys-and-metal market on backpack.tf. The two are different markets and are never blended. Steam lists the item as “Unusual Le Party Phantom”, with no effect in the name — the effect comes from the individual listing.

Price history

121 observations

The key axis converts at today's rate. Prices are recorded in metal, so a line that is flat in keys followed the key rate rather than standing still.

Massed Flies Le Party Phantom sell price, 2025-09-25 to 2026-10-29: 121 observations, from 175 keys to 112 keys. Sampled evenly across the range.
Observed (UTC)	Sell	Buy
25 SEP 2025 · 03:29 UTC	175 keys	123 keys
19 OCT 2025 · 19:53 UTC	159 keys	123 keys
22 FEB 2026 · 00:40 UTC	132 keys	109 keys
23 MAR 2026 · 20:06 UTC	138 keys	83.7 keys
29 APR 2026 · 00:30 UTC	130 keys	71.8 keys
17 MAY 2026 · 22:30 UTC	131 keys	106 keys
9 JUN 2026 · 18:31 UTC	130 keys	107 keys
12 JUL 2026 · 22:44 UTC	125 keys	109 keys
3 AUG 2026 · 00:24 UTC	93.6 keys	81.3 keys
21 AUG 2026 · 12:08 UTC	96.3 keys	83.7 keys
23 AUG 2026 · 00:08 UTC	96.5 keys	83.9 keys
24 AUG 2026 · 12:09 UTC	96.4 keys	83.8 keys
26 AUG 2026 · 00:08 UTC	96.7 keys	84.1 keys
27 AUG 2026 · 12:08 UTC	96.8 keys	84.1 keys
29 AUG 2026 · 04:09 UTC	97.0 keys	84.4 keys
30 AUG 2026 · 16:07 UTC	102 keys	88.6 keys
1 SEP 2026 · 04:09 UTC	106 keys	92.6 keys
2 SEP 2026 · 16:08 UTC	106 keys	92.3 keys
4 SEP 2026 · 04:08 UTC	107 keys	93.4 keys
5 SEP 2026 · 16:08 UTC	109 keys	94.6 keys
7 SEP 2026 · 16:07 UTC	109 keys	95.1 keys
9 SEP 2026 · 04:08 UTC	107 keys	93.3 keys
10 SEP 2026 · 20:09 UTC	109 keys	94.7 keys
12 SEP 2026 · 08:09 UTC	109 keys	94.6 keys
13 SEP 2026 · 20:08 UTC	109 keys	94.5 keys
15 SEP 2026 · 08:09 UTC	109 keys	95.1 keys
17 SEP 2026 · 08:09 UTC	110 keys	95.4 keys
18 SEP 2026 · 20:07 UTC	110 keys	96.0 keys
20 SEP 2026 · 08:08 UTC	111 keys	96.4 keys
21 SEP 2026 · 22:09 UTC	112 keys	97.3 keys
23 SEP 2026 · 10:07 UTC	112 keys	97.1 keys
24 SEP 2026 · 22:08 UTC	112 keys	97.6 keys
26 SEP 2026 · 10:08 UTC	112 keys	97.8 keys
28 SEP 2026 · 12:08 UTC	114 keys	98.7 keys
8 OCT 2026 · 23:10 UTC	113 keys	98.5 keys
24 OCT 2026 · 22:31 UTC	115 keys	100 keys
28 OCT 2026 · 15:11 UTC	114 keys	95.6 keys
28 OCT 2026 · 21:11 UTC	113 keys	98.2 keys
29 OCT 2026 · 03:11 UTC	113 keys	98.7 keys
29 OCT 2026 · 09:11 UTC	112 keys	97.4 keys

Price history in numbers

121 readings since 25 Sep 2025

Over the last 30 days the Massed Flies Le Party Phantom's sell price ranged from 112 keys to 115 keys and is down 1.4% after 14 moves. Over a year it ranged from 84.6 keys to 159 keys (down 29.7%). Today's 112 keys sits in the lower third of its range: the lowest we have recorded is 84.6 keys (31 Jul 2026) and the highest 175 keys (25 Sep 2025). The price has moved 119 times since we began recording it — about once every 3 days.

Window	Low	High	Change	Moves	Readings
30 days	112 keys	115 keys	−1.4%	14	16
90 days	96.3 keys	115 keys	+15.9%	93	95
a year	84.6 keys	159 keys	−29.7%	114	116

Details

SKU	337;5;u12
Last price change	2026-09-29 12:08 UTC
Key rate when recorded	63.89 ref

Same effect, other items

the effect across the catalogue

Item	Value	Updated
Massed Flies Polar Pullover	1,200 keys	12mo ago
Massed Flies HazMat Headcase	600 keys	12mo ago
Massed Flies Head Prize	581 keys	12mo ago
Massed Flies Captain Cardbeard Cutthroat	500 keys	12mo ago
Massed Flies Noh Mercy	481 keys	12mo ago
Massed Flies Scruffed 'n Stitched	470 keys	12mo ago
Massed Flies Monsieur Grenouille	325 keys	12mo ago
Massed Flies Master's Yellow Belt	321 keys	1mo ago
Massed Flies Blighted Beak	309 keys	1mo ago
Massed Flies Exquisite Rack	236 keys	2mo ago

Other effects on the Le Party Phantom

same item, different effect

Item	Value	Updated
Something Burning This Way Comes Le Party Phantom	4,225 keys	12mo ago
Knifestorm Le Party Phantom	4,200 keys	12mo ago
Anti-Freeze Le Party Phantom	1,500 keys	12mo ago
Haunted Phantasm Jr Le Party Phantom	1,200 keys	12mo ago
Misty Skull Le Party Phantom	975 keys	12mo ago
Darkblaze Le Party Phantom	880 keys	12mo ago
Arcana Le Party Phantom	880 keys	12mo ago
Green Black Hole Le Party Phantom	873 keys	3mo ago
Time Warp Le Party Phantom	777 keys	12mo ago
Purple Energy Le Party Phantom	775 keys	12mo ago

Priced similarly

across the catalogue

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Sulphurous Sergeant's Drill Hat	115 keys	2mo ago
Searing Plasma Crone's Dome	115 keys	1mo ago
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Starstorm Insomnia Scotsman's Stove Pipe	114 keys	1mo ago