This price has not changed since 2026-03-08 08:41 UTC. It reflects the last observed trade rather than current market value, and this page is excluded from our sitemap for that reason.
Sell price
283 keys
Buy price
140 keys, 48.88 ref
In keys
283 keys
In USD
$608.45 at the Steam key rate
Community price on backpack.tf: 190–215 keys, last changed 2026-10-18 (18d ago). The live quote above, 283 keys, is 49% higher and last moved 8mo 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
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.
Sulphurous Professor's Peculiarity sell price, 2025-09-25 to 2026-10-27: 68 observations, from 249 keys to 289 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
249 keys
204 keys
9 OCT 2025 · 08:13 UTC
237 keys
214 keys
19 OCT 2025 · 19:59 UTC
226 keys
203 keys
10 NOV 2025 · 00:19 UTC
246 keys
221 keys
15 DEC 2025 · 06:40 UTC
243 keys
0.00 keys
20 OCT 2026 · 15:12 UTC
286 keys
131 keys
20 OCT 2026 · 21:12 UTC
287 keys
132 keys
21 OCT 2026 · 01:12 UTC
287 keys
132 keys
21 OCT 2026 · 23:11 UTC
287 keys
132 keys
22 OCT 2026 · 01:12 UTC
288 keys
132 keys
22 OCT 2026 · 05:12 UTC
287 keys
132 keys
22 OCT 2026 · 13:12 UTC
288 keys
132 keys
22 OCT 2026 · 19:12 UTC
287 keys
132 keys
22 OCT 2026 · 21:12 UTC
285 keys
131 keys
23 OCT 2026 · 03:12 UTC
285 keys
131 keys
23 OCT 2026 · 07:12 UTC
287 keys
134 keys
23 OCT 2026 · 09:12 UTC
285 keys
133 keys
23 OCT 2026 · 13:12 UTC
287 keys
134 keys
23 OCT 2026 · 17:12 UTC
287 keys
135 keys
23 OCT 2026 · 21:12 UTC
287 keys
135 keys
23 OCT 2026 · 23:12 UTC
286 keys
135 keys
24 OCT 2026 · 03:12 UTC
286 keys
136 keys
24 OCT 2026 · 09:13 UTC
288 keys
137 keys
24 OCT 2026 · 15:11 UTC
288 keys
137 keys
24 OCT 2026 · 17:11 UTC
288 keys
138 keys
24 OCT 2026 · 22:31 UTC
288 keys
138 keys
25 OCT 2026 · 03:11 UTC
287 keys
138 keys
25 OCT 2026 · 07:11 UTC
287 keys
139 keys
25 OCT 2026 · 11:12 UTC
288 keys
139 keys
25 OCT 2026 · 15:11 UTC
287 keys
139 keys
25 OCT 2026 · 19:11 UTC
288 keys
140 keys
25 OCT 2026 · 21:11 UTC
286 keys
139 keys
26 OCT 2026 · 03:11 UTC
288 keys
140 keys
26 OCT 2026 · 07:11 UTC
287 keys
140 keys
26 OCT 2026 · 09:11 UTC
289 keys
140 keys
26 OCT 2026 · 15:11 UTC
288 keys
141 keys
26 OCT 2026 · 19:12 UTC
285 keys
139 keys
26 OCT 2026 · 23:11 UTC
288 keys
141 keys
27 OCT 2026 · 01:11 UTC
289 keys
142 keys
27 OCT 2026 · 05:11 UTC
289 keys
143 keys
Price history in numbers
68 readings since 25 Sep 2025
Over the last 30 days the Sulphurous Professor's Peculiarity's sell price ranged from 285 keys to 289 keys and is up 1.0% after 33 moves. Over a year it ranged from 243 keys to 289 keys (up 17.8%). Today's 289 keys sits at the top of its range: the lowest we have recorded is 215 keys (25 Oct 2025) and the highest 289 keys (27 Oct 2026). The price has moved 42 times since we began recording it — about once every 9 days.