Community price on backpack.tf: 38.0–39.0 keys, last changed 2026-08-18 (18d ago). The live quote above, 33.4 keys, is 12% lower and last moved 5d 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: $174.29 — the lowest of one listing for the Neutron Star effect when we looked on 2026-09-04 01:38 UTC (2d 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 33 keys, 28.22 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 Big Topper”, with no effect in the name — the effect comes from the individual listing.
Price history
52 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.
Neutron Star Big Topper sell price, 2025-09-25 to 2026-08-31: 52 observations, from 24.1 keys to 33.4 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
24.1 keys
16.5 keys
30 SEP 2025 · 21:38 UTC
24.1 keys
16.4 keys
19 OCT 2025 · 21:05 UTC
21.9 keys
16.4 keys
25 OCT 2025 · 17:29 UTC
20.9 keys
15.6 keys
10 NOV 2025 · 01:29 UTC
22.1 keys
16.6 keys
5 DEC 2025 · 08:56 UTC
37.4 keys
34.0 keys
22 DEC 2025 · 07:14 UTC
37.3 keys
16.7 keys
29 DEC 2025 · 00:54 UTC
36.3 keys
16.9 keys
4 JAN 2026 · 20:50 UTC
35.7 keys
17.3 keys
22 JAN 2026 · 01:44 UTC
32.8 keys
18.0 keys
4 FEB 2026 · 12:22 UTC
30.4 keys
18.3 keys
8 FEB 2026 · 22:43 UTC
29.7 keys
18.3 keys
23 FEB 2026 · 20:41 UTC
29.9 keys
19.5 keys
4 MAR 2026 · 08:41 UTC
29.7 keys
19.4 keys
8 MAR 2026 · 22:42 UTC
29.4 keys
19.4 keys
22 MAR 2026 · 02:07 UTC
31.2 keys
20.8 keys
30 MAR 2026 · 18:30 UTC
31.5 keys
21.4 keys
5 APR 2026 · 22:29 UTC
31.5 keys
21.5 keys
19 APR 2026 · 10:30 UTC
31.6 keys
23.7 keys
29 APR 2026 · 20:30 UTC
30.0 keys
24.1 keys
3 MAY 2026 · 22:31 UTC
29.5 keys
25.2 keys
10 MAY 2026 · 22:33 UTC
30.9 keys
27.3 keys
24 MAY 2026 · 18:31 UTC
30.6 keys
27.6 keys
2 JUN 2026 · 16:30 UTC
31.0 keys
27.8 keys
8 JUN 2026 · 00:31 UTC
30.6 keys
27.6 keys
23 JUN 2026 · 21:14 UTC
32.7 keys
28.4 keys
29 JUN 2026 · 09:12 UTC
34.4 keys
29.9 keys
8 JUL 2026 · 07:12 UTC
32.1 keys
27.9 keys
29 JUL 2026 · 00:45 UTC
36.8 keys
32.0 keys
3 AUG 2026 · 00:24 UTC
38.2 keys
33.3 keys
10 AUG 2026 · 15:11 UTC
39.1 keys
34.0 keys
23 AUG 2026 · 14:09 UTC
38.2 keys
33.2 keys
24 AUG 2026 · 02:09 UTC
38.3 keys
33.3 keys
25 AUG 2026 · 06:09 UTC
38.5 keys
33.5 keys
25 AUG 2026 · 14:09 UTC
38.5 keys
33.4 keys
25 AUG 2026 · 20:09 UTC
39.0 keys
33.9 keys
25 AUG 2026 · 22:09 UTC
39.2 keys
34.1 keys
26 AUG 2026 · 02:09 UTC
39.5 keys
34.4 keys
30 AUG 2026 · 12:08 UTC
34.8 keys
30.2 keys
31 AUG 2026 · 18:10 UTC
33.4 keys
29.1 keys
Price history in numbers
52 readings since 25 Sep 2025
Over the last 30 days the Neutron Star Big Topper's sell price ranged from 33.4 keys to 39.5 keys and is down 14.5% after 12 moves. Over a year it ranged from 20.9 keys to 39.5 keys (up 38.7%). Today's 33.4 keys sits in the upper third of its range: the lowest we have recorded is 20.9 keys (25 Oct 2025) and the highest 39.5 keys (26 Aug 2026). The price has moved 49 times since we began recording it — about once every 7 days.