Community price on backpack.tf: 77.0 keys, last changed 2025-08-04 (1.1y ago). The live quote above, 65.3 keys, is 15% lower and last moved 5h 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: $156.09 — the lowest of one listing for the Terror-Watt effect when we looked on 2026-08-31 01:32 UTC (6d 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 65 keys, 15.77 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 Fortunate Son”, with no effect in the name — the effect comes from the individual listing.
Price history
46 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 Fortunate Son sell price, 2025-09-25 to 2026-09-05: 46 observations, from 78.1 keys to 65.3 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
78.1 keys
63.9 keys
30 SEP 2025 · 21:23 UTC
78.0 keys
63.8 keys
9 OCT 2025 · 09:04 UTC
74.5 keys
67.1 keys
19 OCT 2025 · 20:53 UTC
70.9 keys
63.8 keys
10 NOV 2025 · 01:16 UTC
69.2 keys
62.3 keys
22 JUN 2026 · 17:13 UTC
52.4 keys
45.6 keys
29 JUN 2026 · 01:14 UTC
54.7 keys
47.6 keys
5 JUL 2026 · 15:12 UTC
52.0 keys
45.2 keys
11 JUL 2026 · 14:44 UTC
52.2 keys
45.4 keys
19 JUL 2026 · 22:44 UTC
54.6 keys
47.5 keys
3 AUG 2026 · 00:24 UTC
61.4 keys
53.4 keys
10 AUG 2026 · 13:10 UTC
62.4 keys
54.3 keys
21 AUG 2026 · 00:09 UTC
62.4 keys
54.2 keys
21 AUG 2026 · 14:08 UTC
62.4 keys
54.2 keys
22 AUG 2026 · 02:08 UTC
62.3 keys
54.1 keys
22 AUG 2026 · 14:08 UTC
62.3 keys
54.2 keys
23 AUG 2026 · 02:09 UTC
62.4 keys
54.3 keys
24 AUG 2026 · 02:09 UTC
62.5 keys
54.4 keys
24 AUG 2026 · 14:09 UTC
62.0 keys
53.9 keys
25 AUG 2026 · 02:08 UTC
62.2 keys
54.1 keys
25 AUG 2026 · 14:09 UTC
62.3 keys
54.2 keys
26 AUG 2026 · 02:09 UTC
62.4 keys
54.2 keys
26 AUG 2026 · 14:09 UTC
62.5 keys
54.3 keys
27 AUG 2026 · 14:09 UTC
62.7 keys
54.5 keys
28 AUG 2026 · 03:04 UTC
63.1 keys
54.8 keys
28 AUG 2026 · 14:10 UTC
63.3 keys
55.1 keys
29 AUG 2026 · 02:09 UTC
63.6 keys
55.3 keys
29 AUG 2026 · 14:09 UTC
63.8 keys
55.5 keys
30 AUG 2026 · 02:09 UTC
64.1 keys
55.8 keys
30 AUG 2026 · 14:10 UTC
64.2 keys
55.8 keys
31 AUG 2026 · 14:09 UTC
64.3 keys
56.0 keys
1 SEP 2026 · 02:09 UTC
63.9 keys
55.5 keys
1 SEP 2026 · 14:08 UTC
63.7 keys
55.4 keys
2 SEP 2026 · 02:08 UTC
62.9 keys
54.7 keys
2 SEP 2026 · 14:08 UTC
63.4 keys
55.1 keys
3 SEP 2026 · 02:08 UTC
63.8 keys
55.5 keys
4 SEP 2026 · 02:08 UTC
64.4 keys
56.0 keys
4 SEP 2026 · 14:08 UTC
64.0 keys
55.7 keys
5 SEP 2026 · 02:08 UTC
66.4 keys
57.7 keys
5 SEP 2026 · 14:08 UTC
65.3 keys
56.7 keys
Price history in numbers
46 readings since 25 Sep 2025
Over the last 30 days the Terror-Watt Fortunate Son's sell price ranged from 62.0 keys to 66.4 keys and is up 4.6% after 32 moves. Over a year it ranged from 52.0 keys to 78.1 keys (down 16.4%). Today's 65.3 keys sits in the middle of its range: the lowest we have recorded is 52.0 keys (5 Jul 2026) and the highest 78.1 keys (25 Sep 2025). The price has moved 45 times since we began recording it — about once every 8 days.