Community price on backpack.tf: 14.0 keys, last changed 2023-07-16 (3.2y ago). The live quote above, 19.6 keys, is 40% higher and last moved 30d 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: $81.00 — the lowest of one listing for the Bubbling 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 19 keys, 37.44 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 Cosa Nostra Cap”, with no effect in the name — the effect comes from the individual listing.
Price history
24 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.
Bubbling Cosa Nostra Cap sell price, 2025-09-25 to 2026-10-08: 24 observations, from 14.3 keys to 20.1 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
14.3 keys
11.7 keys
30 SEP 2025 · 20:32 UTC
15.3 keys
12.5 keys
9 OCT 2025 · 08:15 UTC
14.7 keys
13.2 keys
19 OCT 2025 · 20:01 UTC
13.9 keys
12.5 keys
25 OCT 2025 · 16:20 UTC
13.3 keys
12.0 keys
10 NOV 2025 · 00:23 UTC
12.7 keys
11.4 keys
26 MAR 2026 · 10:06 UTC
30.0 keys
11.2 keys
1 APR 2026 · 00:30 UTC
20.7 keys
12.2 keys
10 APR 2026 · 20:29 UTC
20.9 keys
15.6 keys
19 APR 2026 · 18:30 UTC
18.9 keys
13.6 keys
26 APR 2026 · 22:31 UTC
20.1 keys
15.1 keys
5 MAY 2026 · 22:31 UTC
18.9 keys
15.9 keys
22 JUN 2026 · 19:13 UTC
16.0 keys
13.9 keys
29 JUN 2026 · 23:12 UTC
15.7 keys
13.7 keys
5 JUL 2026 · 23:12 UTC
15.3 keys
13.3 keys
12 JUL 2026 · 10:44 UTC
15.4 keys
13.4 keys
23 JUL 2026 · 10:45 UTC
9.91 keys
8.58 keys
29 JUL 2026 · 00:45 UTC
9.74 keys
8.48 keys
4 AUG 2026 · 03:11 UTC
10.4 keys
8.98 keys
10 AUG 2026 · 03:11 UTC
15.6 keys
13.5 keys
19 AUG 2026 · 16:09 UTC
20.1 keys
17.5 keys
13 SEP 2026 · 18:07 UTC
19.6 keys
17.0 keys
4 OCT 2026 · 01:10 UTC
14.7 keys
12.8 keys
8 OCT 2026 · 01:10 UTC
20.1 keys
17.5 keys
Price history in numbers
24 readings since 25 Sep 2025
Over the last 30 days the Bubbling Cosa Nostra Cap's sell price ranged from 14.7 keys to 20.1 keys and is up 2.4% after 2 moves. Over a year it ranged from 9.74 keys to 30.0 keys (up 44.1%). Today's 20.1 keys sits in the middle of its range: the lowest we have recorded is 9.74 keys (29 Jul 2026) and the highest 30.0 keys (26 Mar 2026). The price has moved 23 times since we began recording it — about once every 16 days.