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Fireflies El Mostacho

✦ FirefliesUnusual13d ago
Sell price
21 keys, 45 ref
Buy price
18 keys, 55.88 ref
In keys
21.7 keys
In USD
$47.55 at the Steam key rate

Community price on backpack.tf: 22.0 keys, last changed 2023-11-20 (2.9y ago). The live quote above, 21.7 keys, is 1% lower and last moved 13d 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 1h ago.

Price history

21 observations

Interactive chart. Press the left and right arrow keys to move along the series, Home or End to jump to either end, Escape to clear.

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.

Fireflies El Mostacho sell price, 2025-09-25 to 2026-10-07: 21 observations, from 23.3 keys to 24.0 keys.
Observed (UTC)SellBuy
25 SEP 2025 · 03:29 UTC23.3 keys19.0 keys
30 SEP 2025 · 22:24 UTC22.2 keys18.2 keys
9 OCT 2025 · 09:57 UTC21.3 keys19.1 keys
19 OCT 2025 · 21:51 UTC20.2 keys18.2 keys
25 OCT 2025 · 18:10 UTC19.3 keys17.4 keys
10 NOV 2025 · 02:04 UTC20.5 keys18.4 keys
29 JUN 2026 · 11:12 UTC15.7 keys13.7 keys
8 JUL 2026 · 13:12 UTC14.3 keys12.4 keys
19 JUL 2026 · 12:45 UTC15.0 keys13.0 keys
29 JUL 2026 · 22:45 UTC15.9 keys13.8 keys
1 AUG 2026 · 00:45 UTC16.3 keys14.0 keys
12 AUG 2026 · 03:11 UTC16.6 keys14.4 keys
18 AUG 2026 · 09:10 UTC15.7 keys13.6 keys
30 AUG 2026 · 14:10 UTC15.9 keys13.8 keys
1 SEP 2026 · 16:09 UTC16.6 keys14.5 keys
12 SEP 2026 · 18:09 UTC20.7 keys18.0 keys
13 SEP 2026 · 14:08 UTC21.8 keys19.0 keys
26 SEP 2026 · 22:10 UTC22.5 keys19.5 keys
29 SEP 2026 · 14:08 UTC20.5 keys17.8 keys
30 SEP 2026 · 12:09 UTC21.7 keys18.9 keys
7 OCT 2026 · 11:09 UTC24.0 keys20.9 keys

Price history in numbers

21 readings since 25 Sep 2025

Over the last 30 days the Fireflies El Mostacho's sell price ranged from 20.5 keys to 24.0 keys and is up 9.9% after 4 moves. Over a year it ranged from 14.3 keys to 24.0 keys (up 18.7%). Today's 24.0 keys sits at the top of its range: the lowest we have recorded is 14.3 keys (8 Jul 2026) and the highest 24.0 keys (7 Oct 2026). The price has moved 20 times since we began recording it — about once every 19 days.

WindowLowHighChangeMovesReadings
30 days20.5 keys24.0 keys+9.9%45
90 days15.0 keys24.0 keys+60.3%1213
a year14.3 keys24.0 keys+18.7%1718

Details

SKU31074;5;u291
Last price change2026-09-30 12:09 UTC
Key rate when recorded63.22 ref

Same effect, other items

the effect across the catalogue
ItemValueUpdated
Fireflies Full Metal Helmet232 keys12d ago
Fireflies Ballooniphones225 keys11mo ago
Fireflies Gauzed Gaze180 keys1mo ago
Fireflies Patriot Peak99.8 keys12d ago
Fireflies Bone Cone87.4 keys3mo ago
Fireflies Bumble Beenie80.4 keys2mo ago
Fireflies Racc Mann80.0 keys2mo ago
Fireflies Smissmas Saxton70.9 keys11mo ago
Fireflies Rotation Sensation64.5 keys13d ago
Fireflies Punk's Pomp57.1 keys12d ago

Other effects on the El Mostacho

same item, different effect

Priced similarly

across the catalogue
ItemValueUpdated
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Memory Leak Tsarboosh21.7 keys16d ago
Dead Presidents Head Warmer22.2 keys12d ago
Massed Flies Shellmet21.8 keys12d ago
Terror-Watt Gentleman's Ushanka21.2 keys16d ago
Vivid Plasma Phononaut21.8 keys11d ago