Community price on backpack.tf: 22.0 keys, last changed 2025-10-05 (11mo ago). The live quote above, 20.9 keys, is 5% lower and last moved 9d 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: $56.01 — the lowest of 3 listings for the Massed Flies effect when we looked on 2026-08-31 01:29 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 20 keys, 57.55 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 Tyrant's Helm”, with no effect in the name — the effect comes from the individual listing.
Price history
35 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 Tyrant's Helm sell price, 2025-09-25 to 2026-08-27: 35 observations, from 15.9 keys to 20.9 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
15.9 keys
13.0 keys
30 SEP 2025 · 20:10 UTC
15.9 keys
13.0 keys
9 OCT 2025 · 07:54 UTC
20.9 keys
18.8 keys
19 OCT 2025 · 19:40 UTC
19.9 keys
17.9 keys
25 OCT 2025 · 15:57 UTC
19.0 keys
17.1 keys
9 NOV 2025 · 23:58 UTC
20.0 keys
17.9 keys
29 APR 2026 · 20:29 UTC
19.8 keys
15.8 keys
2 MAY 2026 · 08:30 UTC
19.5 keys
15.6 keys
11 MAY 2026 · 00:30 UTC
20.7 keys
16.6 keys
17 MAY 2026 · 22:30 UTC
20.5 keys
15.0 keys
2 JUN 2026 · 08:29 UTC
20.7 keys
16.7 keys
8 JUN 2026 · 06:30 UTC
20.5 keys
14.3 keys
15 JUN 2026 · 06:29 UTC
19.9 keys
14.8 keys
22 JUN 2026 · 17:13 UTC
18.3 keys
15.9 keys
29 JUN 2026 · 01:14 UTC
19.9 keys
17.3 keys
5 JUL 2026 · 23:12 UTC
16.6 keys
14.4 keys
12 JUL 2026 · 22:44 UTC
14.5 keys
12.6 keys
19 JUL 2026 · 22:44 UTC
14.9 keys
13.0 keys
30 JUL 2026 · 18:43 UTC
13.9 keys
12.0 keys
3 AUG 2026 · 00:24 UTC
17.5 keys
15.2 keys
13 AUG 2026 · 23:12 UTC
17.6 keys
15.3 keys
21 AUG 2026 · 12:08 UTC
15.4 keys
13.4 keys
21 AUG 2026 · 14:08 UTC
15.5 keys
13.5 keys
21 AUG 2026 · 18:09 UTC
15.7 keys
13.7 keys
21 AUG 2026 · 22:08 UTC
15.8 keys
13.7 keys
22 AUG 2026 · 02:08 UTC
15.8 keys
13.7 keys
22 AUG 2026 · 06:08 UTC
17.2 keys
14.9 keys
22 AUG 2026 · 08:08 UTC
17.7 keys
15.4 keys
22 AUG 2026 · 12:08 UTC
17.2 keys
15.0 keys
23 AUG 2026 · 06:09 UTC
17.3 keys
15.1 keys
25 AUG 2026 · 08:08 UTC
20.8 keys
18.1 keys
25 AUG 2026 · 20:09 UTC
20.8 keys
18.1 keys
26 AUG 2026 · 12:08 UTC
20.9 keys
18.2 keys
27 AUG 2026 · 00:08 UTC
20.9 keys
18.2 keys
27 AUG 2026 · 12:08 UTC
20.9 keys
18.2 keys
Price history in numbers
35 readings since 25 Sep 2025
Over the last 30 days the Massed Flies Tyrant's Helm's sell price ranged from 15.4 keys to 20.9 keys and is up 18.6% after 14 moves. Over a year it ranged from 13.9 keys to 20.9 keys (up 31.4%). Today's 20.9 keys sits at the top of its range: the lowest we have recorded is 13.9 keys (30 Jul 2026) and the highest 20.9 keys (9 Oct 2025). The price has moved 34 times since we began recording it — about once every 10 days.