Community price on backpack.tf: 42.0–51.0 keys, last changed 2024-08-17 (2.2y ago). The live quote above, 38.8 keys, is 8% lower and last moved 11d 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: $111.71 — the lowest of one listing for the Massed Flies effect when we looked on 2026-10-08 01:24 UTC (5d 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, 49.55 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 Crone's Dome”, with no effect in the name — the effect comes from the individual listing.
Price history
84 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 2026-10-12: 84 observations, from 53.4 keys to 40.3 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
53.4 keys
36.1 keys
9 OCT 2025 · 08:23 UTC
50.0 keys
37.9 keys
25 OCT 2025 · 16:29 UTC
45.3 keys
34.4 keys
6 DEC 2025 · 16:44 UTC
50.2 keys
39.1 keys
11 JAN 2026 · 11:35 UTC
44.7 keys
35.5 keys
1 MAR 2026 · 00:41 UTC
34.7 keys
30.0 keys
15 MAR 2026 · 22:07 UTC
33.9 keys
28.9 keys
1 APR 2026 · 00:30 UTC
37.2 keys
32.2 keys
22 APR 2026 · 10:29 UTC
37.4 keys
29.9 keys
13 MAY 2026 · 14:32 UTC
36.7 keys
30.3 keys
23 MAY 2026 · 20:30 UTC
36.4 keys
30.1 keys
8 JUN 2026 · 00:30 UTC
36.4 keys
30.2 keys
30 JUN 2026 · 19:12 UTC
36.2 keys
31.5 keys
11 JUL 2026 · 08:43 UTC
34.4 keys
29.9 keys
29 JUL 2026 · 00:45 UTC
38.6 keys
33.5 keys
10 AUG 2026 · 07:11 UTC
40.7 keys
35.4 keys
21 AUG 2026 · 18:09 UTC
40.0 keys
34.8 keys
25 AUG 2026 · 18:09 UTC
40.2 keys
34.9 keys
28 AUG 2026 · 16:09 UTC
39.4 keys
34.3 keys
29 AUG 2026 · 20:09 UTC
39.9 keys
34.7 keys
6 SEP 2026 · 00:09 UTC
38.6 keys
33.6 keys
7 SEP 2026 · 20:08 UTC
39.3 keys
34.2 keys
14 SEP 2026 · 16:08 UTC
37.7 keys
32.8 keys
15 SEP 2026 · 02:07 UTC
38.4 keys
33.4 keys
15 SEP 2026 · 08:09 UTC
38.6 keys
33.6 keys
17 SEP 2026 · 02:08 UTC
39.3 keys
34.2 keys
21 SEP 2026 · 10:10 UTC
39.4 keys
34.2 keys
22 SEP 2026 · 10:08 UTC
39.5 keys
34.4 keys
24 SEP 2026 · 22:08 UTC
39.7 keys
34.5 keys
27 SEP 2026 · 02:09 UTC
40.1 keys
34.9 keys
29 SEP 2026 · 00:08 UTC
39.7 keys
34.5 keys
1 OCT 2026 · 00:09 UTC
39.4 keys
34.3 keys
1 OCT 2026 · 20:08 UTC
38.8 keys
33.7 keys
3 OCT 2026 · 17:09 UTC
40.0 keys
34.8 keys
4 OCT 2026 · 05:09 UTC
39.6 keys
34.5 keys
6 OCT 2026 · 05:08 UTC
40.1 keys
34.9 keys
7 OCT 2026 · 09:09 UTC
39.3 keys
34.2 keys
9 OCT 2026 · 03:09 UTC
40.0 keys
34.8 keys
11 OCT 2026 · 03:09 UTC
40.0 keys
34.8 keys
12 OCT 2026 · 19:08 UTC
40.3 keys
35.0 keys
Price history in numbers
84 readings since 25 Sep 2025
Over the last 30 days the Massed Flies Crone's Dome's sell price ranged from 37.7 keys to 40.3 keys and is up 5.1% after 37 moves. Over a year it ranged from 33.9 keys to 51.7 keys (down 15.3%). Today's 40.3 keys sits in the lower third of its range: the lowest we have recorded is 33.9 keys (15 Mar 2026) and the highest 53.4 keys (25 Sep 2025). The price has moved 83 times since we began recording it — about once every 5 days.