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Neutron Star Whoopee Cap

✦ Neutron StarUnusual13d ago
Sell price
83 keys, 27.33 ref
Buy price
72 keys, 34.88 ref
In keys
83.4 keys
In USD
$183.55 at the Steam key rate

Community price on backpack.tf: 110 keys, last changed 2022-08-16 (4.2y ago). The live quote above, 83.4 keys, is 24% 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.

Price history

21 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 Whoopee Cap sell price, 2025-09-25 to 2026-10-11: 21 observations, from 113 keys to 65.6 keys.
Observed (UTC)SellBuy
25 SEP 2025 · 03:29 UTC113 keys92.2 keys
30 SEP 2025 · 20:23 UTC112 keys91.3 keys
9 OCT 2025 · 08:06 UTC107 keys96.0 keys
19 OCT 2025 · 19:52 UTC101 keys91.3 keys
25 OCT 2025 · 16:11 UTC96.6 keys87.0 keys
10 NOV 2025 · 00:12 UTC106 keys95.4 keys
8 JUL 2026 · 18:44 UTC72.0 keys62.6 keys
29 JUL 2026 · 02:45 UTC81.7 keys71.1 keys
3 AUG 2026 · 00:24 UTC88.3 keys76.8 keys
12 AUG 2026 · 15:11 UTC51.2 keys44.5 keys
21 AUG 2026 · 06:08 UTC61.2 keys53.3 keys
29 AUG 2026 · 18:10 UTC75.7 keys65.8 keys
4 SEP 2026 · 00:08 UTC82.1 keys71.4 keys
4 SEP 2026 · 16:08 UTC81.4 keys70.8 keys
6 SEP 2026 · 06:09 UTC82.1 keys71.4 keys
11 SEP 2026 · 04:08 UTC82.1 keys71.4 keys
15 SEP 2026 · 18:08 UTC60.1 keys52.2 keys
30 SEP 2026 · 14:08 UTC83.4 keys72.6 keys
4 OCT 2026 · 03:09 UTC75.7 keys65.9 keys
6 OCT 2026 · 23:10 UTC76.9 keys66.9 keys
11 OCT 2026 · 01:10 UTC65.6 keys57.1 keys

Price history in numbers

21 readings since 25 Sep 2025

Over the last 30 days the Neutron Star Whoopee Cap's sell price ranged from 60.1 keys to 83.4 keys and is up 9.2% after 4 moves. Over a year it ranged from 51.2 keys to 106 keys (down 35.3%). Today's 65.6 keys sits in the lower third of its range: the lowest we have recorded is 51.2 keys (12 Aug 2026) and the highest 113 keys (25 Sep 2025). The price has moved 20 times since we began recording it — about once every 19 days.

WindowLowHighChangeMovesReadings
30 days60.1 keys83.4 keys+9.2%45
90 days51.2 keys88.3 keys−19.7%1314
a year51.2 keys106 keys−35.3%1718

Details

SKU174;5;u107
Last price change2026-09-30 14:08 UTC
Key rate when recorded63.00 ref

Same effect, other items

the effect across the catalogue

Other effects on the Whoopee Cap

same item, different effect

Priced similarly

across the catalogue