Community price on backpack.tf: 35.0 keys, last changed 2024-07-23 (2.1y ago). The live quote above, 29.9 keys, is 15% 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: $92.85 — the lowest of one listing for the Contagious Eruption effect when we looked on 2026-09-04 01:33 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 29 keys, 58.11 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 Detective”, with no effect in the name — the effect comes from the individual listing.
Price history
21 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.
Contagious Eruption Detective sell price, 2025-09-25 to 2026-08-29: 21 observations, from 34.9 keys to 29.9 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
34.9 keys
28.5 keys
30 SEP 2025 · 22:50 UTC
35.8 keys
29.3 keys
9 OCT 2025 · 10:21 UTC
34.3 keys
30.8 keys
19 OCT 2025 · 22:17 UTC
32.6 keys
29.3 keys
25 OCT 2025 · 18:30 UTC
31.0 keys
27.9 keys
10 NOV 2025 · 02:25 UTC
31.8 keys
28.6 keys
22 JUN 2026 · 17:13 UTC
27.8 keys
24.2 keys
29 JUN 2026 · 01:14 UTC
22.0 keys
19.1 keys
5 JUL 2026 · 23:12 UTC
26.6 keys
23.2 keys
12 JUL 2026 · 16:45 UTC
24.3 keys
21.1 keys
20 JUL 2026 · 04:44 UTC
14.4 keys
12.5 keys
29 JUL 2026 · 10:44 UTC
25.6 keys
22.3 keys
3 AUG 2026 · 08:24 UTC
20.7 keys
18.1 keys
10 AUG 2026 · 01:11 UTC
33.9 keys
29.5 keys
19 AUG 2026 · 20:10 UTC
19.9 keys
17.3 keys
21 AUG 2026 · 16:08 UTC
30.1 keys
26.1 keys
25 AUG 2026 · 00:09 UTC
31.2 keys
27.1 keys
25 AUG 2026 · 18:10 UTC
31.3 keys
27.2 keys
26 AUG 2026 · 08:09 UTC
31.4 keys
27.3 keys
27 AUG 2026 · 06:09 UTC
31.4 keys
27.3 keys
29 AUG 2026 · 18:10 UTC
29.9 keys
26.0 keys
Price history in numbers
21 readings since 25 Sep 2025
Over the last 30 days the Contagious Eruption Detective's sell price ranged from 19.9 keys to 33.9 keys and is down 11.7% after 7 moves. Over a year it ranged from 14.4 keys to 35.8 keys (down 14.2%). Today's 29.9 keys sits in the upper third of its range: the lowest we have recorded is 14.4 keys (20 Jul 2026) and the highest 35.8 keys (30 Sep 2025). The price has moved 20 times since we began recording it — about once every 17 days.
Strange Killstreak Festive Wrench