Community price on backpack.tf: 12.0–17.0 keys, last changed 2025-02-26 (1.6y ago). The live quote above, 14.0 keys, is inside the community’s range 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: $37.01 — the lowest of 5 listings for the Cosmic Constellations effect when we looked on 2026-10-07 01:44 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 14 keys, 1.44 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 Bulb Bonnet”, with no effect in the name — the effect comes from the individual listing.
Price history
72 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.
Cosmic Constellations Bulb Bonnet sell price, 2025-09-25 to 2026-10-13: 72 observations, from 17.2 keys to 10.8 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
17.2 keys
9.92 keys
9 OCT 2025 · 10:27 UTC
16.5 keys
10.4 keys
25 OCT 2025 · 18:38 UTC
7.31 keys
7.31 keys
10 NOV 2025 · 02:31 UTC
15.8 keys
10.0 keys
23 NOV 2025 · 06:49 UTC
17.1 keys
13.3 keys
15 DEC 2025 · 06:51 UTC
17.9 keys
13.8 keys
29 DEC 2025 · 02:58 UTC
17.4 keys
14.5 keys
11 JAN 2026 · 21:39 UTC
14.4 keys
13.7 keys
29 JAN 2026 · 01:46 UTC
14.4 keys
11.8 keys
1 FEB 2026 · 23:46 UTC
13.8 keys
11.4 keys
15 FEB 2026 · 22:41 UTC
14.4 keys
10.2 keys
1 MAR 2026 · 00:43 UTC
12.9 keys
10.7 keys
19 MAY 2026 · 10:32 UTC
13.7 keys
10.8 keys
1 JUN 2026 · 06:32 UTC
12.9 keys
5.96 keys
8 JUN 2026 · 00:32 UTC
12.6 keys
6.04 keys
29 JUN 2026 · 01:14 UTC
7.17 keys
6.23 keys
12 JUL 2026 · 20:45 UTC
11.8 keys
10.2 keys
29 JUL 2026 · 02:45 UTC
14.1 keys
12.3 keys
11 AUG 2026 · 05:11 UTC
14.8 keys
12.8 keys
24 AUG 2026 · 02:09 UTC
7.53 keys
6.55 keys
25 AUG 2026 · 16:09 UTC
7.54 keys
6.56 keys
29 AUG 2026 · 14:09 UTC
14.0 keys
12.2 keys
30 AUG 2026 · 14:10 UTC
14.2 keys
12.3 keys
31 AUG 2026 · 14:09 UTC
14.3 keys
12.4 keys
1 SEP 2026 · 16:09 UTC
14.2 keys
12.3 keys
4 SEP 2026 · 14:08 UTC
14.1 keys
12.3 keys
5 SEP 2026 · 02:09 UTC
14.7 keys
12.8 keys
14 SEP 2026 · 10:08 UTC
13.6 keys
11.8 keys
15 SEP 2026 · 14:08 UTC
14.2 keys
12.4 keys
19 SEP 2026 · 22:11 UTC
14.3 keys
12.4 keys
30 SEP 2026 · 22:09 UTC
14.1 keys
12.3 keys
1 OCT 2026 · 10:09 UTC
14.0 keys
12.2 keys
2 OCT 2026 · 23:09 UTC
14.1 keys
12.3 keys
3 OCT 2026 · 23:10 UTC
14.4 keys
12.5 keys
5 OCT 2026 · 01:09 UTC
14.6 keys
12.7 keys
8 OCT 2026 · 13:09 UTC
9.37 keys
8.14 keys
10 OCT 2026 · 09:09 UTC
9.54 keys
8.30 keys
10 OCT 2026 · 21:10 UTC
9.56 keys
8.31 keys
12 OCT 2026 · 03:10 UTC
10.4 keys
9.08 keys
13 OCT 2026 · 07:09 UTC
10.8 keys
9.35 keys
Price history in numbers
72 readings since 25 Sep 2025
Over the last 30 days the Cosmic Constellations Bulb Bonnet's sell price ranged from 9.15 keys to 14.6 keys and is down 20.9% after 21 moves. Over a year it ranged from 7.17 keys to 17.9 keys (down 31.5%). Today's 10.8 keys sits in the middle of its range: the lowest we have recorded is 7.17 keys (29 Jun 2026) and the highest 17.9 keys (15 Dec 2025). The price has moved 70 times since we began recording it — about once every 5 days.