Community price on backpack.tf: 12.0–17.0 keys, last changed 2025-02-26 (1.5y ago). The live quote above, 14.3 keys, is inside the community’s range and last moved 15h 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: $37.00 — the lowest of 5 listings for the Cosmic Constellations effect when we looked on 2026-09-05 01:23 UTC (16h 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, 21.88 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 Bulb Bonnet”, with no effect in the name — the effect comes from the individual listing.
Price history
48 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 2026-09-05: 48 observations, from 16.8 keys to 14.3 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
16.8 keys
9.68 keys
30 SEP 2025 · 22:56 UTC
16.9 keys
9.73 keys
9 OCT 2025 · 10:27 UTC
16.1 keys
10.2 keys
25 OCT 2025 · 18:38 UTC
7.14 keys
7.14 keys
10 NOV 2025 · 02:31 UTC
15.4 keys
9.77 keys
19 NOV 2025 · 10:47 UTC
15.5 keys
14.3 keys
23 NOV 2025 · 06:49 UTC
16.7 keys
13.0 keys
8 DEC 2025 · 00:57 UTC
17.3 keys
15.6 keys
22 DEC 2025 · 01:15 UTC
17.4 keys
13.8 keys
29 DEC 2025 · 02:58 UTC
16.9 keys
14.1 keys
4 JAN 2026 · 22:59 UTC
16.7 keys
14.2 keys
11 JAN 2026 · 21:39 UTC
14.0 keys
13.3 keys
18 JAN 2026 · 23:27 UTC
14.2 keys
11.2 keys
1 FEB 2026 · 23:46 UTC
13.4 keys
11.1 keys
8 FEB 2026 · 22:45 UTC
13.1 keys
7.73 keys
15 FEB 2026 · 22:41 UTC
14.0 keys
9.98 keys
22 FEB 2026 · 22:42 UTC
13.2 keys
10.1 keys
1 MAR 2026 · 00:43 UTC
12.6 keys
10.4 keys
19 MAY 2026 · 10:32 UTC
13.3 keys
10.5 keys
24 MAY 2026 · 18:32 UTC
14.2 keys
10.2 keys
1 JUN 2026 · 06:32 UTC
12.6 keys
5.82 keys
8 JUN 2026 · 00:32 UTC
12.3 keys
5.89 keys
29 JUN 2026 · 01:14 UTC
7.00 keys
6.08 keys
5 JUL 2026 · 11:12 UTC
12.7 keys
11.0 keys
12 JUL 2026 · 20:45 UTC
11.5 keys
9.98 keys
19 JUL 2026 · 14:44 UTC
12.4 keys
10.8 keys
29 JUL 2026 · 02:45 UTC
13.8 keys
12.0 keys
11 AUG 2026 · 05:11 UTC
14.4 keys
12.5 keys
18 AUG 2026 · 12:33 UTC
13.4 keys
11.7 keys
24 AUG 2026 · 02:09 UTC
7.35 keys
6.39 keys
25 AUG 2026 · 16:09 UTC
7.36 keys
6.40 keys
29 AUG 2026 · 02:09 UTC
13.1 keys
11.4 keys
30 AUG 2026 · 02:10 UTC
13.8 keys
12.0 keys
30 AUG 2026 · 14:10 UTC
13.8 keys
12.0 keys
31 AUG 2026 · 02:10 UTC
13.8 keys
12.0 keys
31 AUG 2026 · 14:09 UTC
13.9 keys
12.1 keys
1 SEP 2026 · 02:10 UTC
13.8 keys
12.0 keys
2 SEP 2026 · 04:09 UTC
13.6 keys
11.8 keys
4 SEP 2026 · 14:08 UTC
13.8 keys
12.0 keys
5 SEP 2026 · 02:09 UTC
14.3 keys
12.5 keys
Price history in numbers
48 readings since 25 Sep 2025
Over the last 30 days the Cosmic Constellations Bulb Bonnet's sell price ranged from 7.35 keys to 14.4 keys and is down 0.4% after 14 moves. Over a year it ranged from 7.00 keys to 17.5 keys (down 14.8%). Today's 14.3 keys sits in the upper third of its range: the lowest we have recorded is 7.00 keys (29 Jun 2026) and the highest 17.5 keys (15 Dec 2025). The price has moved 47 times since we began recording it — about once every 7 days.