Community price on backpack.tf: 21.0 keys, last changed 2026-06-15 (3mo ago). The live quote above, 7.13 keys, is 66% lower and last moved 15d 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: $60.22 — the lowest of one listing for the Circling Heart effect when we looked on 2026-08-29 01:36 UTC (8d 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 7 keys, 8.55 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 Professor Photon”, with no effect in the name — the effect comes from the individual listing.
Price history
13 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.
Circling Heart Professor Photon sell price, 2026-06-15 to 2026-08-21: 13 observations, from 18.6 keys to 7.13 keys.
Observed (UTC)
Sell
Buy
15 JUN 2026 · 14:09 UTC
18.6 keys
16.7 keys
22 JUN 2026 · 17:13 UTC
6.59 keys
5.73 keys
30 JUN 2026 · 21:12 UTC
6.82 keys
5.93 keys
9 JUL 2026 · 16:44 UTC
6.66 keys
5.79 keys
19 JUL 2026 · 12:45 UTC
6.88 keys
5.98 keys
29 JUL 2026 · 12:46 UTC
6.92 keys
6.01 keys
4 AUG 2026 · 15:12 UTC
7.25 keys
6.30 keys
13 AUG 2026 · 15:12 UTC
7.29 keys
6.33 keys
18 AUG 2026 · 16:34 UTC
7.22 keys
6.28 keys
21 AUG 2026 · 12:08 UTC
7.27 keys
6.32 keys
21 AUG 2026 · 14:08 UTC
7.26 keys
6.31 keys
21 AUG 2026 · 18:09 UTC
7.23 keys
6.29 keys
21 AUG 2026 · 20:09 UTC
7.13 keys
6.20 keys
Price history in numbers
13 readings since 15 Jun 2026
Over the last 30 days the Circling Heart Professor Photon's sell price ranged from 7.13 keys to 7.29 keys and is down 2.1% after 5 moves. Over a year it ranged from 6.59 keys to 18.6 keys (down 61.6%). Today's 7.13 keys sits at the bottom of its range: the lowest we have recorded is 6.59 keys (22 Jun 2026) and the highest 18.6 keys (15 Jun 2026). The price has moved 12 times since we began recording it — about once every 6 days.
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