Community price on backpack.tf: 31.0–35.0 keys, last changed 2026-07-05 (2mo ago). The live quote above, 29.3 keys, is 5% lower and last moved 7d 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: $115.95 — the lowest of 2 listings for the Massed Flies effect when we looked on 2026-09-01 01:42 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 29 keys, 20.44 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 Hong Kong Cone”, with no effect in the name — the effect comes from the individual listing.
Price history
34 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 Hong Kong Cone sell price, 2025-09-25 to 2026-08-29: 34 observations, from 42.9 keys to 29.3 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
42.9 keys
35.1 keys
30 SEP 2025 · 21:01 UTC
42.9 keys
35.1 keys
9 OCT 2025 · 08:43 UTC
41.0 keys
36.8 keys
19 OCT 2025 · 20:30 UTC
39.0 keys
35.1 keys
25 OCT 2025 · 16:51 UTC
37.1 keys
33.4 keys
10 NOV 2025 · 00:53 UTC
39.3 keys
35.3 keys
19 NOV 2025 · 14:42 UTC
35.4 keys
28.7 keys
23 NOV 2025 · 22:41 UTC
37.9 keys
30.9 keys
1 DEC 2025 · 00:54 UTC
37.9 keys
31.6 keys
15 JAN 2026 · 00:14 UTC
34.4 keys
29.2 keys
1 FEB 2026 · 21:45 UTC
33.7 keys
27.9 keys
9 FEB 2026 · 16:40 UTC
33.1 keys
27.5 keys
28 FEB 2026 · 00:41 UTC
32.8 keys
26.6 keys
8 MAR 2026 · 16:42 UTC
32.5 keys
26.8 keys
15 MAR 2026 · 06:07 UTC
34.5 keys
28.7 keys
2 APR 2026 · 20:31 UTC
34.9 keys
29.2 keys
8 APR 2026 · 00:30 UTC
34.4 keys
29.6 keys
19 APR 2026 · 20:30 UTC
34.5 keys
28.6 keys
26 APR 2026 · 20:32 UTC
32.8 keys
27.4 keys
2 MAY 2026 · 08:32 UTC
32.3 keys
27.0 keys
9 MAY 2026 · 22:31 UTC
34.2 keys
28.9 keys
17 MAY 2026 · 20:33 UTC
33.9 keys
28.8 keys
1 JUN 2026 · 04:30 UTC
34.0 keys
27.7 keys
9 JUN 2026 · 14:31 UTC
33.6 keys
28.8 keys
17 JUN 2026 · 12:09 UTC
31.0 keys
27.6 keys
23 JUN 2026 · 05:13 UTC
32.7 keys
28.4 keys
7 JUL 2026 · 19:11 UTC
30.9 keys
26.9 keys
12 JUL 2026 · 14:44 UTC
31.2 keys
27.1 keys
19 JUL 2026 · 22:44 UTC
27.3 keys
23.7 keys
29 JUL 2026 · 12:46 UTC
34.7 keys
30.2 keys
7 AUG 2026 · 07:14 UTC
36.0 keys
31.4 keys
20 AUG 2026 · 02:09 UTC
29.2 keys
25.4 keys
22 AUG 2026 · 20:08 UTC
29.4 keys
25.5 keys
29 AUG 2026 · 12:09 UTC
29.3 keys
25.5 keys
Price history in numbers
34 readings since 25 Sep 2025
Over the last 30 days the Massed Flies Hong Kong Cone's sell price ranged from 29.2 keys to 36.0 keys and is down 18.7% after 3 moves. Over a year it ranged from 27.3 keys to 42.9 keys (down 31.7%). Today's 29.3 keys sits in the lower third of its range: the lowest we have recorded is 27.3 keys (19 Jul 2026) and the highest 42.9 keys (25 Sep 2025). The price has moved 33 times since we began recording it — about once every 10 days.
Non-Craftable Tough Break Campaign Pass