Community price on backpack.tf: 21.0–22.0 keys, last changed 2022-05-18 (4.3y ago). The live quote above, 13.2 keys, is 37% lower 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: $78.66 — the lowest of one listing for the Plum Prankster effect when we looked on 2026-09-03 01:33 UTC (3d 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 13 keys, 10.44 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 King Cardbeard”, with no effect in the name — the effect comes from the individual listing.
Price history
64 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.
Plum Prankster King Cardbeard sell price, 2025-09-25 to 2026-09-05: 64 observations, from 23.7 keys to 13.2 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
23.7 keys
18.5 keys
5 OCT 2025 · 22:53 UTC
23.6 keys
19.3 keys
12 OCT 2025 · 20:06 UTC
18.2 keys
15.4 keys
1 NOV 2025 · 16:01 UTC
16.5 keys
12.8 keys
8 NOV 2025 · 18:03 UTC
17.5 keys
9.63 keys
1 DEC 2025 · 01:02 UTC
30.8 keys
16.0 keys
15 DEC 2025 · 00:52 UTC
31.7 keys
16.6 keys
22 DEC 2025 · 01:13 UTC
21.3 keys
17.0 keys
4 JAN 2026 · 22:57 UTC
19.6 keys
16.7 keys
22 JAN 2026 · 01:45 UTC
18.1 keys
16.2 keys
29 JAN 2026 · 01:45 UTC
16.9 keys
16.2 keys
8 FEB 2026 · 22:44 UTC
26.3 keys
15.3 keys
15 FEB 2026 · 22:41 UTC
17.7 keys
16.6 keys
1 MAR 2026 · 00:43 UTC
15.5 keys
8.92 keys
18 MAR 2026 · 18:07 UTC
14.0 keys
8.05 keys
22 MAR 2026 · 22:08 UTC
16.3 keys
8.77 keys
12 APR 2026 · 16:30 UTC
14.8 keys
3.03 keys
19 APR 2026 · 20:31 UTC
14.2 keys
0.16 keys
3 MAY 2026 · 16:34 UTC
12.8 keys
10.9 keys
17 MAY 2026 · 22:32 UTC
13.5 keys
11.2 keys
24 MAY 2026 · 20:30 UTC
13.4 keys
6.77 keys
8 JUN 2026 · 00:32 UTC
13.4 keys
9.43 keys
22 JUN 2026 · 00:12 UTC
13.8 keys
9.60 keys
29 JUN 2026 · 01:14 UTC
10.2 keys
8.87 keys
12 JUL 2026 · 20:45 UTC
11.4 keys
9.94 keys
19 JUL 2026 · 22:44 UTC
12.8 keys
11.2 keys
3 AUG 2026 · 00:24 UTC
17.0 keys
14.8 keys
20 AUG 2026 · 22:08 UTC
12.6 keys
10.9 keys
24 AUG 2026 · 06:09 UTC
12.8 keys
11.1 keys
25 AUG 2026 · 18:10 UTC
12.8 keys
11.2 keys
28 AUG 2026 · 07:13 UTC
12.4 keys
10.8 keys
29 AUG 2026 · 06:09 UTC
13.1 keys
11.4 keys
30 AUG 2026 · 06:09 UTC
13.3 keys
11.5 keys
30 AUG 2026 · 20:10 UTC
13.3 keys
11.5 keys
1 SEP 2026 · 00:09 UTC
13.2 keys
11.5 keys
2 SEP 2026 · 00:09 UTC
13.0 keys
11.3 keys
2 SEP 2026 · 14:09 UTC
13.1 keys
11.4 keys
3 SEP 2026 · 14:08 UTC
13.1 keys
11.4 keys
4 SEP 2026 · 02:08 UTC
13.3 keys
11.6 keys
5 SEP 2026 · 08:08 UTC
13.2 keys
11.5 keys
Price history in numbers
64 readings since 25 Sep 2025
Over the last 30 days the Plum Prankster King Cardbeard's sell price ranged from 12.1 keys to 14.6 keys and is up 9.0% after 20 moves. Over a year it ranged from 10.2 keys to 31.7 keys (down 44.5%). Today's 13.2 keys sits in the lower third of its range: the lowest we have recorded is 10.2 keys (29 Jun 2026) and the highest 31.7 keys (15 Dec 2025). The price has moved 63 times since we began recording it — about once every 5 days.