Community price on backpack.tf: 25.0 keys, last changed 2023-05-30 (3.4y ago). The live quote above, 28.6 keys, is 14% higher and last moved 12d 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: $111.92 — the lowest of one listing for the Terror-Watt effect when we looked on 2026-10-10 01:35 UTC (3d 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 28 keys, 35.33 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 Virus Doctor”, with no effect in the name — the effect comes from the individual listing.
Price history
110 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.
Terror-Watt Virus Doctor sell price, 2025-09-25 to 2026-10-12: 110 observations, from 25.9 keys to 29.9 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
25.9 keys
21.2 keys
19 OCT 2025 · 20:19 UTC
23.5 keys
21.2 keys
19 NOV 2025 · 20:40 UTC
28.6 keys
24.0 keys
1 DEC 2025 · 22:51 UTC
30.7 keys
25.9 keys
8 JAN 2026 · 21:37 UTC
29.1 keys
26.5 keys
15 FEB 2026 · 22:40 UTC
31.0 keys
27.2 keys
8 MAR 2026 · 16:42 UTC
31.0 keys
27.6 keys
1 MAY 2026 · 18:29 UTC
32.6 keys
26.0 keys
24 MAY 2026 · 20:29 UTC
34.3 keys
28.3 keys
15 JUN 2026 · 00:30 UTC
33.1 keys
19.5 keys
31 AUG 2026 · 10:09 UTC
20.4 keys
17.8 keys
1 SEP 2026 · 22:08 UTC
21.4 keys
18.6 keys
3 SEP 2026 · 10:08 UTC
22.2 keys
19.3 keys
4 SEP 2026 · 10:08 UTC
23.8 keys
20.7 keys
5 SEP 2026 · 22:11 UTC
24.5 keys
21.3 keys
7 SEP 2026 · 10:08 UTC
26.0 keys
22.6 keys
8 SEP 2026 · 22:09 UTC
26.3 keys
22.9 keys
10 SEP 2026 · 10:09 UTC
28.0 keys
24.3 keys
11 SEP 2026 · 10:08 UTC
28.5 keys
24.8 keys
12 SEP 2026 · 22:07 UTC
28.6 keys
24.9 keys
14 SEP 2026 · 10:07 UTC
28.7 keys
25.0 keys
15 SEP 2026 · 22:08 UTC
28.8 keys
25.1 keys
16 SEP 2026 · 22:08 UTC
29.2 keys
25.4 keys
19 SEP 2026 · 12:09 UTC
29.2 keys
25.4 keys
20 SEP 2026 · 00:09 UTC
29.1 keys
25.3 keys
20 SEP 2026 · 08:08 UTC
29.1 keys
25.3 keys
20 SEP 2026 · 20:09 UTC
29.1 keys
25.4 keys
21 SEP 2026 · 12:08 UTC
28.9 keys
25.1 keys
23 SEP 2026 · 00:08 UTC
29.3 keys
25.5 keys
24 SEP 2026 · 16:08 UTC
29.4 keys
25.6 keys
26 SEP 2026 · 04:08 UTC
29.5 keys
25.7 keys
27 SEP 2026 · 20:09 UTC
29.8 keys
25.9 keys
29 SEP 2026 · 00:08 UTC
29.4 keys
25.6 keys
30 SEP 2026 · 14:08 UTC
29.1 keys
25.3 keys
2 OCT 2026 · 02:08 UTC
29.1 keys
25.3 keys
3 OCT 2026 · 15:10 UTC
29.8 keys
25.9 keys
5 OCT 2026 · 07:09 UTC
30.1 keys
26.1 keys
6 OCT 2026 · 07:09 UTC
30.0 keys
26.1 keys
7 OCT 2026 · 21:09 UTC
30.0 keys
26.1 keys
12 OCT 2026 · 05:08 UTC
29.9 keys
26.0 keys
Price history in numbers
110 readings since 25 Sep 2025
Over the last 30 days the Terror-Watt Virus Doctor's sell price ranged from 28.6 keys to 30.1 keys and is up 4.6% after 55 moves. Over a year it ranged from 19.9 keys to 34.9 keys (up 27.3%). Today's 29.9 keys sits in the upper third of its range: the lowest we have recorded is 19.9 keys (30 Aug 2026) and the highest 34.9 keys (14 Apr 2026). The price has moved 108 times since we began recording it — about once every 4 days.