Community price on backpack.tf: 13.0 keys, last changed 2023-12-09 (2.7y ago). The live quote above, 8.80 keys, is 32% lower and last moved 2d 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: $22.65 — the lowest of 3 listings for the Massed Flies effect when we looked on 2026-09-01 01:37 UTC (5d 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 8 keys, 50.11 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 German Gonzila”, with no effect in the name — the effect comes from the individual listing.
Price history
12 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 German Gonzila sell price, 2025-09-25 to 2026-09-04: 12 observations, from 13.3 keys to 8.80 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
13.3 keys
10.8 keys
30 SEP 2025 · 20:26 UTC
14.3 keys
11.7 keys
9 OCT 2025 · 08:10 UTC
13.7 keys
12.2 keys
19 OCT 2025 · 19:56 UTC
13.0 keys
11.7 keys
25 OCT 2025 · 16:15 UTC
12.4 keys
11.1 keys
10 NOV 2025 · 00:16 UTC
13.9 keys
12.4 keys
3 AUG 2026 · 12:24 UTC
9.48 keys
8.27 keys
10 AUG 2026 · 05:10 UTC
9.51 keys
8.29 keys
18 AUG 2026 · 05:11 UTC
9.35 keys
8.03 keys
22 AUG 2026 · 16:08 UTC
9.12 keys
7.93 keys
28 AUG 2026 · 14:10 UTC
9.17 keys
7.97 keys
4 SEP 2026 · 04:08 UTC
8.80 keys
7.65 keys
Price history in numbers
12 readings since 25 Sep 2025
Over the last 30 days the Massed Flies German Gonzila's sell price ranged from 8.80 keys to 9.51 keys and is down 7.5% after 4 moves. Over a year it ranged from 8.80 keys to 14.3 keys (down 33.6%). Today's 8.80 keys sits at the bottom of its range: the lowest we have recorded is 8.80 keys (4 Sep 2026) and the highest 14.3 keys (30 Sep 2025). The price has moved 11 times since we began recording it — about once every 31 days.
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