Community price on backpack.tf: 169–182 keys, last changed 2026-04-21 (5mo ago). The live quote above, 165 keys, is 3% lower and last moved 11h 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: $400.00 — the lowest of 2 listings for the Acidic Climate effect when we looked on 2026-09-02 01:26 UTC (4d 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 164 keys, 40.11 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 Mean Captain”, with no effect in the name — the effect comes from the individual listing.
Price history
58 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.
Acidic Climate Mean Captain sell price, 2025-09-25 to 2026-09-05: 58 observations, from 207 keys to 165 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
207 keys
161 keys
30 SEP 2025 · 22:58 UTC
206 keys
161 keys
19 OCT 2025 · 22:27 UTC
187 keys
161 keys
25 OCT 2025 · 18:39 UTC
178 keys
153 keys
17 NOV 2025 · 22:45 UTC
207 keys
143 keys
22 NOV 2025 · 14:55 UTC
196 keys
153 keys
8 DEC 2025 · 00:57 UTC
195 keys
165 keys
15 DEC 2025 · 00:55 UTC
229 keys
175 keys
30 DEC 2025 · 16:53 UTC
207 keys
173 keys
3 JAN 2026 · 16:55 UTC
186 keys
170 keys
22 JAN 2026 · 21:45 UTC
175 keys
152 keys
29 JAN 2026 · 07:44 UTC
181 keys
153 keys
8 FEB 2026 · 22:45 UTC
152 keys
146 keys
15 FEB 2026 · 20:40 UTC
161 keys
157 keys
22 FEB 2026 · 22:42 UTC
163 keys
123 keys
8 MAR 2026 · 22:43 UTC
153 keys
124 keys
15 MAR 2026 · 22:08 UTC
151 keys
122 keys
1 APR 2026 · 04:31 UTC
171 keys
75.9 keys
15 APR 2026 · 04:32 UTC
161 keys
72.5 keys
22 MAY 2026 · 00:31 UTC
165 keys
108 keys
1 JUN 2026 · 12:31 UTC
158 keys
135 keys
15 JUN 2026 · 00:33 UTC
160 keys
133 keys
22 JUN 2026 · 23:13 UTC
159 keys
139 keys
5 JUL 2026 · 23:12 UTC
154 keys
134 keys
12 JUL 2026 · 22:44 UTC
169 keys
147 keys
27 JUL 2026 · 02:45 UTC
164 keys
143 keys
4 AUG 2026 · 13:12 UTC
169 keys
147 keys
12 AUG 2026 · 01:11 UTC
170 keys
148 keys
22 AUG 2026 · 06:08 UTC
92.5 keys
80.4 keys
24 AUG 2026 · 10:09 UTC
166 keys
145 keys
26 AUG 2026 · 14:09 UTC
167 keys
146 keys
27 AUG 2026 · 08:09 UTC
168 keys
146 keys
30 AUG 2026 · 18:10 UTC
168 keys
146 keys
31 AUG 2026 · 08:09 UTC
168 keys
146 keys
1 SEP 2026 · 08:09 UTC
166 keys
144 keys
2 SEP 2026 · 06:09 UTC
163 keys
141 keys
3 SEP 2026 · 06:09 UTC
164 keys
143 keys
3 SEP 2026 · 20:08 UTC
168 keys
146 keys
4 SEP 2026 · 20:08 UTC
165 keys
144 keys
5 SEP 2026 · 08:08 UTC
165 keys
143 keys
Price history in numbers
58 readings since 25 Sep 2025
Over the last 30 days the Acidic Climate Mean Captain's sell price ranged from 92.5 keys to 170 keys and is down 3.0% after 18 moves. Over a year it ranged from 92.5 keys to 229 keys (down 20.3%). Today's 165 keys sits in the middle of its range: the lowest we have recorded is 92.5 keys (22 Aug 2026) and the highest 229 keys (15 Dec 2025). The price has moved 57 times since we began recording it — about once every 6 days.