Community price on backpack.tf: 16.0 keys, last changed 2025-10-23 (10mo ago). The live quote above, 15.1 keys, is 6% lower and last moved 3d 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: $40.01 — the lowest of 2 listings for the Fireflies effect when we looked on 2026-09-04 01:51 UTC (2d 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 15 keys, 5.33 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 Hazard Handler”, with no effect in the name — the effect comes from the individual listing.
Price history
65 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 Hazard Handler sell price, 2025-10-24 to 2026-09-02: 65 observations, from 14.1 keys to 15.1 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
24 OCT 2025 · 03:03 UTC
14.1 keys
12.7 keys
22 JUN 2026 · 17:13 UTC
12.3 keys
10.7 keys
29 JUN 2026 · 01:14 UTC
12.3 keys
10.8 keys
11 JUL 2026 · 20:44 UTC
12.2 keys
10.6 keys
29 JUL 2026 · 12:46 UTC
12.7 keys
11.1 keys
3 AUG 2026 · 00:24 UTC
13.0 keys
11.3 keys
21 AUG 2026 · 10:09 UTC
13.8 keys
12.0 keys
21 AUG 2026 · 14:08 UTC
13.9 keys
12.1 keys
21 AUG 2026 · 22:09 UTC
13.9 keys
12.1 keys
22 AUG 2026 · 06:08 UTC
14.0 keys
12.1 keys
22 AUG 2026 · 10:09 UTC
13.7 keys
11.9 keys
22 AUG 2026 · 20:09 UTC
14.1 keys
12.2 keys
23 AUG 2026 · 02:09 UTC
13.2 keys
11.5 keys
23 AUG 2026 · 06:09 UTC
13.3 keys
11.6 keys
23 AUG 2026 · 14:09 UTC
13.6 keys
11.8 keys
23 AUG 2026 · 22:09 UTC
13.7 keys
11.9 keys
24 AUG 2026 · 02:09 UTC
13.8 keys
12.0 keys
24 AUG 2026 · 10:09 UTC
13.8 keys
12.0 keys
24 AUG 2026 · 16:09 UTC
13.8 keys
12.0 keys
24 AUG 2026 · 18:09 UTC
13.8 keys
12.0 keys
25 AUG 2026 · 00:09 UTC
13.9 keys
12.1 keys
26 AUG 2026 · 18:09 UTC
13.3 keys
11.6 keys
27 AUG 2026 · 00:09 UTC
13.5 keys
11.7 keys
27 AUG 2026 · 06:09 UTC
13.2 keys
11.4 keys
27 AUG 2026 · 08:09 UTC
13.2 keys
11.5 keys
27 AUG 2026 · 14:09 UTC
13.4 keys
11.7 keys
27 AUG 2026 · 20:11 UTC
13.4 keys
11.7 keys
27 AUG 2026 · 22:09 UTC
13.4 keys
11.7 keys
28 AUG 2026 · 09:36 UTC
13.5 keys
11.7 keys
28 AUG 2026 · 14:10 UTC
13.5 keys
11.8 keys
28 AUG 2026 · 16:09 UTC
13.4 keys
11.6 keys
28 AUG 2026 · 22:10 UTC
13.5 keys
11.8 keys
29 AUG 2026 · 22:10 UTC
13.4 keys
11.6 keys
30 AUG 2026 · 02:10 UTC
13.4 keys
11.6 keys
30 AUG 2026 · 10:09 UTC
13.7 keys
11.9 keys
30 AUG 2026 · 16:08 UTC
13.3 keys
11.6 keys
30 AUG 2026 · 22:10 UTC
14.0 keys
12.2 keys
1 SEP 2026 · 00:09 UTC
14.4 keys
12.6 keys
1 SEP 2026 · 12:09 UTC
14.9 keys
13.0 keys
2 SEP 2026 · 22:08 UTC
15.1 keys
13.1 keys
Price history in numbers
65 readings since 24 Oct 2025
Over the last 30 days the Fireflies Hazard Handler's sell price ranged from 13.1 keys to 15.1 keys and is up 2.8% after 55 moves. Over a year it ranged from 11.6 keys to 15.1 keys (up 6.8%). Today's 15.1 keys sits at the top of its range: the lowest we have recorded is 11.6 keys (5 Jul 2026) and the highest 15.1 keys (2 Sep 2026). The price has moved 64 times since we began recording it — about once every 5 days.