Community price on backpack.tf: 30.0–32.0 keys, last changed 2019-11-15 (6.9y ago). The live quote above, 19.6 keys, is 35% lower and last moved 13d 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: $173.75 — the lowest of one listing for the Purple Energy effect when we looked on 2026-10-06 01:40 UTC (7d 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, 37.22 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 Vampire Vanquisher”, with no effect in the name — the effect comes from the individual listing.
Price history
68 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.
Purple Energy Vampire Vanquisher sell price, 2025-09-25 to 2026-10-12: 68 observations, from 32.4 keys to 10.9 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
32.4 keys
25.6 keys
9 OCT 2025 · 09:53 UTC
30.9 keys
26.9 keys
19 OCT 2025 · 21:45 UTC
29.4 keys
25.6 keys
10 NOV 2025 · 02:01 UTC
33.0 keys
28.6 keys
4 JAN 2026 · 08:52 UTC
61.9 keys
52.9 keys
17 JAN 2026 · 00:12 UTC
57.5 keys
49.2 keys
24 JAN 2026 · 21:45 UTC
54.1 keys
48.7 keys
8 FEB 2026 · 22:44 UTC
50.4 keys
45.3 keys
22 FEB 2026 · 16:42 UTC
50.9 keys
45.7 keys
5 MAR 2026 · 14:44 UTC
50.4 keys
41.6 keys
19 MAR 2026 · 00:07 UTC
48.4 keys
44.3 keys
30 MAR 2026 · 06:07 UTC
53.2 keys
16.6 keys
12 APR 2026 · 14:31 UTC
52.4 keys
12.6 keys
19 APR 2026 · 18:31 UTC
52.1 keys
12.9 keys
4 JUN 2026 · 22:31 UTC
50.5 keys
41.9 keys
22 JUN 2026 · 10:11 UTC
49.3 keys
42.1 keys
29 JUN 2026 · 15:12 UTC
50.1 keys
43.5 keys
15 JUL 2026 · 04:43 UTC
47.8 keys
41.6 keys
29 JUL 2026 · 22:45 UTC
51.7 keys
44.9 keys
10 AUG 2026 · 01:11 UTC
54.6 keys
47.4 keys
21 AUG 2026 · 08:09 UTC
10.7 keys
9.33 keys
1 SEP 2026 · 12:09 UTC
18.6 keys
16.2 keys
4 SEP 2026 · 08:09 UTC
16.2 keys
14.1 keys
8 SEP 2026 · 22:09 UTC
10.4 keys
9.06 keys
10 SEP 2026 · 06:08 UTC
17.7 keys
15.4 keys
14 SEP 2026 · 08:08 UTC
18.1 keys
15.8 keys
16 SEP 2026 · 00:09 UTC
18.3 keys
15.9 keys
16 SEP 2026 · 18:08 UTC
18.3 keys
15.9 keys
19 SEP 2026 · 12:09 UTC
18.6 keys
16.2 keys
21 SEP 2026 · 00:11 UTC
18.9 keys
16.5 keys
22 SEP 2026 · 18:10 UTC
19.0 keys
16.6 keys
23 SEP 2026 · 06:09 UTC
19.1 keys
16.6 keys
25 SEP 2026 · 10:08 UTC
19.4 keys
16.9 keys
27 SEP 2026 · 12:08 UTC
19.8 keys
17.2 keys
28 SEP 2026 · 04:08 UTC
19.9 keys
17.3 keys
30 SEP 2026 · 00:09 UTC
19.6 keys
17.0 keys
8 OCT 2026 · 19:10 UTC
10.9 keys
9.45 keys
9 OCT 2026 · 21:10 UTC
10.9 keys
9.49 keys
10 OCT 2026 · 09:09 UTC
10.9 keys
9.49 keys
12 OCT 2026 · 21:08 UTC
10.9 keys
9.49 keys
Price history in numbers
68 readings since 25 Sep 2025
Over the last 30 days the Purple Energy Vampire Vanquisher's sell price ranged from 10.7 keys to 19.9 keys and is down 39.8% after 24 moves. Over a year it ranged from 10.4 keys to 65.0 keys (down 62.9%). Today's 10.9 keys sits at the bottom of its range: the lowest we have recorded is 10.4 keys (8 Sep 2026) and the highest 65.0 keys (25 Dec 2025). The price has moved 66 times since we began recording it — about once every 6 days.