Community price on backpack.tf: 20.0 keys, last changed 2021-12-18 (4.8y ago). The live quote above, 21.8 keys, is 9% higher and last moved 11d 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: $111.71 — the lowest of one listing for the Vivid Plasma effect when we looked on 2026-10-08 01:24 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 21 keys, 51.55 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 Phononaut”, with no effect in the name — the effect comes from the individual listing.
Price history
98 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.
Vivid Plasma Phononaut sell price, 2025-09-25 to 2026-10-10: 98 observations, from 20.4 keys to 22.6 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
20.4 keys
16.7 keys
9 OCT 2025 · 09:06 UTC
19.4 keys
17.5 keys
10 NOV 2025 · 01:18 UTC
18.7 keys
16.9 keys
1 DEC 2025 · 20:54 UTC
32.6 keys
27.7 keys
14 JAN 2026 · 10:19 UTC
29.1 keys
17.7 keys
15 FEB 2026 · 22:40 UTC
26.4 keys
21.2 keys
15 MAR 2026 · 22:07 UTC
25.2 keys
19.9 keys
1 APR 2026 · 06:30 UTC
27.7 keys
21.9 keys
13 MAY 2026 · 14:33 UTC
25.3 keys
22.0 keys
24 MAY 2026 · 20:30 UTC
25.1 keys
22.0 keys
15 JUN 2026 · 02:30 UTC
24.9 keys
22.0 keys
1 JUL 2026 · 07:13 UTC
15.5 keys
13.5 keys
29 JUL 2026 · 00:45 UTC
20.8 keys
18.1 keys
12 AUG 2026 · 01:11 UTC
21.8 keys
18.9 keys
29 AUG 2026 · 08:09 UTC
21.3 keys
18.5 keys
29 AUG 2026 · 16:09 UTC
21.3 keys
18.5 keys
30 AUG 2026 · 04:09 UTC
21.4 keys
18.6 keys
30 AUG 2026 · 12:08 UTC
21.9 keys
19.0 keys
31 AUG 2026 · 10:09 UTC
21.3 keys
18.6 keys
31 AUG 2026 · 18:10 UTC
21.3 keys
18.5 keys
2 SEP 2026 · 06:08 UTC
20.8 keys
18.1 keys
3 SEP 2026 · 06:08 UTC
21.0 keys
18.3 keys
9 SEP 2026 · 08:09 UTC
20.9 keys
18.2 keys
11 SEP 2026 · 18:09 UTC
21.1 keys
18.3 keys
17 SEP 2026 · 02:08 UTC
21.5 keys
18.7 keys
17 SEP 2026 · 10:09 UTC
21.5 keys
18.7 keys
18 SEP 2026 · 08:08 UTC
21.2 keys
18.5 keys
21 SEP 2026 · 18:09 UTC
21.8 keys
19.0 keys
23 SEP 2026 · 06:09 UTC
21.9 keys
19.1 keys
24 SEP 2026 · 10:08 UTC
22.0 keys
19.2 keys
26 SEP 2026 · 00:08 UTC
22.1 keys
19.2 keys
27 SEP 2026 · 02:10 UTC
22.3 keys
19.4 keys
30 SEP 2026 · 10:07 UTC
21.9 keys
19.0 keys
1 OCT 2026 · 10:08 UTC
21.8 keys
19.0 keys
3 OCT 2026 · 11:09 UTC
22.1 keys
19.3 keys
4 OCT 2026 · 13:13 UTC
22.4 keys
19.5 keys
6 OCT 2026 · 09:10 UTC
22.5 keys
19.6 keys
7 OCT 2026 · 09:09 UTC
22.1 keys
19.2 keys
9 OCT 2026 · 13:10 UTC
22.6 keys
19.7 keys
10 OCT 2026 · 13:09 UTC
22.6 keys
19.7 keys
Price history in numbers
98 readings since 25 Sep 2025
Over the last 30 days the Vivid Plasma Phononaut's sell price ranged from 21.1 keys to 22.6 keys and is up 7.2% after 39 moves. Over a year it ranged from 15.5 keys to 34.0 keys (up 22.3%). Today's 22.6 keys sits in the middle of its range: the lowest we have recorded is 15.5 keys (1 Jul 2026) and the highest 34.0 keys (10 Dec 2025). The price has moved 96 times since we began recording it — about once every 4 days.