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Massed Flies Ol' Geezer

Massed FliesUnusual15h ago
Sell price
12 keys, 51.66 ref
Buy price
11 keys, 8.66 ref
In keys
12.8 keys
In USD
$28.93 at the Steam key rate

Community price on backpack.tf: 21.0 keys, last changed 2025-05-22 (1.3y ago). The live quote above, 12.8 keys, is 39% lower and last moved 15h 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.

Price history

18 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.

Massed Flies Ol' Geezer sell price, 2025-09-25 to 2026-09-05: 18 observations, from 21.8 keys to 12.8 keys.
Observed (UTC)SellBuy
25 SEP 2025 · 03:29 UTC21.8 keys17.8 keys
30 SEP 2025 · 20:31 UTC21.8 keys17.8 keys
9 OCT 2025 · 08:14 UTC20.9 keys18.7 keys
19 OCT 2025 · 20:00 UTC19.8 keys17.8 keys
25 OCT 2025 · 16:19 UTC18.9 keys17.0 keys
10 NOV 2025 · 00:20 UTC19.4 keys17.4 keys
23 JUN 2026 · 07:14 UTC11.2 keys9.74 keys
29 JUN 2026 · 01:14 UTC11.8 keys10.2 keys
5 JUL 2026 · 19:12 UTC11.1 keys9.63 keys
12 JUL 2026 · 22:44 UTC11.1 keys9.67 keys
19 JUL 2026 · 22:44 UTC10.6 keys9.22 keys
29 JUL 2026 · 02:45 UTC12.0 keys10.4 keys
3 AUG 2026 · 00:24 UTC12.6 keys11.0 keys
10 AUG 2026 · 17:11 UTC12.6 keys10.9 keys
21 AUG 2026 · 10:08 UTC12.4 keys10.8 keys
25 AUG 2026 · 10:09 UTC11.4 keys9.89 keys
2 SEP 2026 · 18:09 UTC12.0 keys10.5 keys
5 SEP 2026 · 04:08 UTC12.8 keys11.1 keys

Price history in numbers

18 readings since 25 Sep 2025

Over the last 30 days the Massed Flies Ol' Geezer's sell price ranged from 11.4 keys to 12.8 keys and is up 2.0% after 4 moves. Over a year it ranged from 10.6 keys to 21.8 keys (down 41.4%). Today's 12.8 keys sits in the lower third of its range: the lowest we have recorded is 10.6 keys (19 Jul 2026) and the highest 21.8 keys (25 Sep 2025). The price has moved 17 times since we began recording it — about once every 20 days.

WindowLowHighChangeMovesReadings
30 days11.4 keys12.8 keys+2.0%45
90 days10.6 keys12.8 keys+14.2%1112
a year10.6 keys21.8 keys−41.4%1718

Details

SKU399;5;u12
Last price change2026-09-05 04:08 UTC
Key rate when recorded64.44 ref

Same effect, other items

the effect across the catalogue

Other effects on the Ol' Geezer

same item, different effect
ItemValueUpdated
Scorching Flames Ol' Geezer205 keys3mo ago
Morning Glory Ol' Geezer157 keys5d ago
Time Warp Ol' Geezer142 keys1mo ago
Roboactive Ol' Geezer103 keys5d ago
Death at Dusk Ol' Geezer98.6 keys3h ago
Sunbeams Ol' Geezer92.5 keys11h ago
Phosphorous Ol' Geezer82.6 keys19d ago
Green Energy Ol' Geezer68.0 keys7h ago
The Ooze Ol' Geezer65.4 keys30d ago
Frostbite Ol' Geezer60.6 keys1mo ago

Priced similarly

across the catalogue