Community price on backpack.tf: 42.0–51.0 keys, last changed 2024-08-17 (2.1y ago). The live quote above, 38.7 keys, is 8% lower and last moved 5d 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 1h ago.
Steam Market asking price: $116.40 — the lowest of one listing for the Massed Flies effect when we looked on 2026-08-31 01:32 UTC (6d 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 38 keys, 45.88 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 Crone's Dome”, with no effect in the name — the effect comes from the individual listing.
Price history
43 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.
Massed Flies Crone's Dome sell price, 2025-09-25 to 2026-08-31: 43 observations, from 51.9 keys to 38.7 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
51.9 keys
35.1 keys
30 SEP 2025 · 20:40 UTC
50.8 keys
35.1 keys
9 OCT 2025 · 08:23 UTC
48.6 keys
36.8 keys
19 OCT 2025 · 20:10 UTC
46.2 keys
35.1 keys
25 OCT 2025 · 16:29 UTC
44.0 keys
33.4 keys
10 NOV 2025 · 00:31 UTC
50.3 keys
38.1 keys
6 DEC 2025 · 16:44 UTC
48.8 keys
38.0 keys
3 JAN 2026 · 10:46 UTC
47.3 keys
24.1 keys
11 JAN 2026 · 11:35 UTC
43.4 keys
34.5 keys
22 FEB 2026 · 10:40 UTC
34.8 keys
29.2 keys
1 MAR 2026 · 00:41 UTC
33.7 keys
29.1 keys
8 MAR 2026 · 22:41 UTC
33.3 keys
28.1 keys
15 MAR 2026 · 22:07 UTC
32.9 keys
28.1 keys
26 MAR 2026 · 16:06 UTC
35.4 keys
30.3 keys
1 APR 2026 · 00:30 UTC
36.2 keys
31.3 keys
12 APR 2026 · 22:29 UTC
35.6 keys
32.1 keys
22 APR 2026 · 10:29 UTC
36.3 keys
29.1 keys
1 MAY 2026 · 00:29 UTC
33.6 keys
26.0 keys
13 MAY 2026 · 14:32 UTC
35.7 keys
29.5 keys
15 MAY 2026 · 16:31 UTC
35.5 keys
29.4 keys
31 MAY 2026 · 16:30 UTC
35.8 keys
29.7 keys
8 JUN 2026 · 00:30 UTC
35.3 keys
29.3 keys
15 JUN 2026 · 12:32 UTC
34.5 keys
29.1 keys
22 JUN 2026 · 02:10 UTC
35.8 keys
29.5 keys
30 JUN 2026 · 19:12 UTC
35.2 keys
30.6 keys
6 JUL 2026 · 01:11 UTC
33.3 keys
28.9 keys
11 JUL 2026 · 08:43 UTC
33.4 keys
29.1 keys
19 JUL 2026 · 22:44 UTC
35.5 keys
30.9 keys
29 JUL 2026 · 00:45 UTC
37.5 keys
32.6 keys
3 AUG 2026 · 00:24 UTC
39.1 keys
33.9 keys
10 AUG 2026 · 07:11 UTC
39.6 keys
34.4 keys
20 AUG 2026 · 16:08 UTC
38.6 keys
33.6 keys
21 AUG 2026 · 18:09 UTC
38.9 keys
33.8 keys
25 AUG 2026 · 18:09 UTC
39.1 keys
34.0 keys
27 AUG 2026 · 16:08 UTC
38.0 keys
33.1 keys
28 AUG 2026 · 16:09 UTC
38.3 keys
33.3 keys
29 AUG 2026 · 08:09 UTC
38.4 keys
33.4 keys
29 AUG 2026 · 20:09 UTC
38.8 keys
33.7 keys
30 AUG 2026 · 04:09 UTC
38.8 keys
33.8 keys
31 AUG 2026 · 12:09 UTC
38.7 keys
33.7 keys
Price history in numbers
43 readings since 25 Sep 2025
Over the last 30 days the Massed Flies Crone's Dome's sell price ranged from 38.0 keys to 39.6 keys and is down 2.2% after 10 moves. Over a year it ranged from 32.9 keys to 51.9 keys (down 25.4%). Today's 38.7 keys sits in the lower third of its range: the lowest we have recorded is 32.9 keys (15 Mar 2026) and the highest 51.9 keys (25 Sep 2025). The price has moved 42 times since we began recording it — about once every 8 days.