Community price on backpack.tf: 39.0 keys, last changed 2026-02-04 (7mo ago). The live quote above, 38.0 keys, is 3% lower and last moved 4h 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
20 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.
Green Energy Professor Photon sell price, 2026-04-24 to 2026-09-05: 20 observations, from 33.5 keys to 38.0 keys.
Observed (UTC)
Sell
Buy
24 APR 2026 · 22:32 UTC
33.5 keys
5.76 keys
2 JUL 2026 · 13:13 UTC
17.0 keys
14.8 keys
10 JUL 2026 · 20:45 UTC
6.70 keys
5.83 keys
22 JUL 2026 · 06:45 UTC
18.4 keys
16.0 keys
4 AUG 2026 · 01:11 UTC
21.1 keys
18.4 keys
13 AUG 2026 · 15:12 UTC
26.0 keys
22.7 keys
19 AUG 2026 · 20:10 UTC
7.27 keys
6.32 keys
29 AUG 2026 · 18:10 UTC
32.8 keys
28.6 keys
30 AUG 2026 · 10:09 UTC
33.6 keys
29.2 keys
30 AUG 2026 · 22:10 UTC
32.9 keys
28.6 keys
31 AUG 2026 · 10:10 UTC
32.9 keys
28.6 keys
31 AUG 2026 · 22:10 UTC
32.8 keys
28.5 keys
1 SEP 2026 · 10:09 UTC
32.7 keys
28.4 keys
1 SEP 2026 · 22:08 UTC
32.7 keys
28.4 keys
2 SEP 2026 · 10:08 UTC
32.5 keys
28.2 keys
2 SEP 2026 · 22:08 UTC
32.9 keys
28.6 keys
3 SEP 2026 · 20:08 UTC
37.8 keys
32.9 keys
4 SEP 2026 · 08:09 UTC
38.7 keys
33.6 keys
4 SEP 2026 · 22:08 UTC
37.4 keys
32.5 keys
5 SEP 2026 · 14:09 UTC
38.0 keys
33.0 keys
Price history in numbers
20 readings since 24 Apr 2026
Over the last 30 days the Green Energy Professor Photon's sell price ranged from 7.27 keys to 38.7 keys and is up 45.9% after 14 moves. Over a year it ranged from 6.70 keys to 38.7 keys (up 13.3%). Today's 38.0 keys sits at the top of its range: the lowest we have recorded is 6.70 keys (10 Jul 2026) and the highest 38.7 keys (4 Sep 2026). The price has moved 19 times since we began recording it — about once every 7 days.