Community price on backpack.tf: 40.0 keys, last changed 2026-04-08 (6mo ago). The live quote above, 40.5 keys, is 1% higher and last moved 22d 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: $102.97 — the lowest of one listing for the Kill-a-Watt effect when we looked on 2026-10-13 01:28 UTC (6h 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 40 keys, 34.88 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 Shellmet”, with no effect in the name — the effect comes from the individual listing.
Price history
66 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.
Kill-a-Watt Shellmet sell price, 2025-09-25 to 2026-10-06: 66 observations, from 22.1 keys to 41.0 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
22.1 keys
16.4 keys
9 OCT 2025 · 09:31 UTC
21.1 keys
17.2 keys
19 OCT 2025 · 21:22 UTC
20.0 keys
16.4 keys
10 NOV 2025 · 01:40 UTC
19.6 keys
16.0 keys
29 JUN 2026 · 01:14 UTC
29.6 keys
25.7 keys
5 JUL 2026 · 23:12 UTC
28.1 keys
24.4 keys
19 JUL 2026 · 22:44 UTC
32.3 keys
28.1 keys
4 AUG 2026 · 23:12 UTC
39.6 keys
34.4 keys
12 AUG 2026 · 11:12 UTC
39.9 keys
34.7 keys
22 AUG 2026 · 00:08 UTC
30.3 keys
26.4 keys
23 AUG 2026 · 00:09 UTC
31.0 keys
27.0 keys
23 AUG 2026 · 12:08 UTC
31.4 keys
27.3 keys
24 AUG 2026 · 12:09 UTC
32.6 keys
28.4 keys
25 AUG 2026 · 12:08 UTC
33.6 keys
29.2 keys
26 AUG 2026 · 00:09 UTC
33.9 keys
29.5 keys
27 AUG 2026 · 00:09 UTC
34.7 keys
30.2 keys
28 AUG 2026 · 00:09 UTC
35.3 keys
30.7 keys
28 AUG 2026 · 12:07 UTC
35.8 keys
31.2 keys
29 AUG 2026 · 12:09 UTC
36.4 keys
31.7 keys
30 AUG 2026 · 12:09 UTC
37.8 keys
32.8 keys
31 AUG 2026 · 00:08 UTC
37.2 keys
32.3 keys
1 SEP 2026 · 00:09 UTC
37.3 keys
32.4 keys
2 SEP 2026 · 00:09 UTC
37.0 keys
32.1 keys
2 SEP 2026 · 12:09 UTC
37.1 keys
32.3 keys
3 SEP 2026 · 12:10 UTC
37.8 keys
32.9 keys
4 SEP 2026 · 12:08 UTC
38.9 keys
33.8 keys
5 SEP 2026 · 00:08 UTC
38.8 keys
33.7 keys
6 SEP 2026 · 10:08 UTC
40.3 keys
35.0 keys
7 SEP 2026 · 10:08 UTC
39.6 keys
34.4 keys
7 SEP 2026 · 22:08 UTC
39.5 keys
34.4 keys
10 SEP 2026 · 02:09 UTC
39.2 keys
34.1 keys
12 SEP 2026 · 02:08 UTC
39.4 keys
34.3 keys
12 SEP 2026 · 14:08 UTC
39.5 keys
34.4 keys
13 SEP 2026 · 14:08 UTC
39.4 keys
34.3 keys
14 SEP 2026 · 14:08 UTC
39.0 keys
34.0 keys
15 SEP 2026 · 02:08 UTC
39.8 keys
34.6 keys
16 SEP 2026 · 02:08 UTC
40.0 keys
34.7 keys
17 SEP 2026 · 02:08 UTC
40.6 keys
35.3 keys
17 SEP 2026 · 14:09 UTC
40.5 keys
35.3 keys
6 OCT 2026 · 05:09 UTC
41.0 keys
35.6 keys
Price history in numbers
66 readings since 25 Sep 2025
Over the last 30 days the Kill-a-Watt Shellmet's sell price ranged from 39.0 keys to 41.0 keys and is up 4.0% after 10 moves. Over a year it ranged from 19.1 keys to 41.0 keys (up 104.4%). Today's 41.0 keys sits at the top of its range: the lowest we have recorded is 19.1 keys (25 Oct 2025) and the highest 41.0 keys (6 Oct 2026). The price has moved 65 times since we began recording it — about once every 6 days.