Community price on backpack.tf: 18.0 keys, last changed 2026-08-09 (27d ago). The live quote above, 19.7 keys, is 10% higher and last moved 9d 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: $56.39 — the lowest of 2 listings for the Massed Flies effect when we looked on 2026-09-01 01:37 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 19 keys, 46.88 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 Prince Tavish's Crown”, with no effect in the name — the effect comes from the individual listing.
Price history
19 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 Prince Tavish's Crown sell price, 2025-09-25 to 2026-08-28: 19 observations, from 9.97 keys to 19.7 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
9.97 keys
8.16 keys
30 SEP 2025 · 20:27 UTC
9.95 keys
8.14 keys
9 OCT 2025 · 08:10 UTC
9.52 keys
8.56 keys
19 OCT 2025 · 19:56 UTC
9.05 keys
8.14 keys
25 OCT 2025 · 16:15 UTC
8.62 keys
7.75 keys
10 NOV 2025 · 00:16 UTC
9.17 keys
8.25 keys
26 NOV 2025 · 12:50 UTC
24.1 keys
18.7 keys
1 DEC 2025 · 00:50 UTC
21.7 keys
16.8 keys
22 JUN 2026 · 17:13 UTC
16.1 keys
14.0 keys
29 JUN 2026 · 01:14 UTC
17.0 keys
14.8 keys
8 JUL 2026 · 13:11 UTC
16.5 keys
14.4 keys
19 JUL 2026 · 22:44 UTC
16.2 keys
14.1 keys
29 JUL 2026 · 22:45 UTC
18.1 keys
15.7 keys
5 AUG 2026 · 01:13 UTC
18.7 keys
16.3 keys
13 AUG 2026 · 03:12 UTC
18.8 keys
16.4 keys
20 AUG 2026 · 20:08 UTC
15.4 keys
13.4 keys
26 AUG 2026 · 22:09 UTC
18.4 keys
16.0 keys
27 AUG 2026 · 02:09 UTC
19.3 keys
16.8 keys
28 AUG 2026 · 07:13 UTC
19.7 keys
17.2 keys
Price history in numbers
19 readings since 25 Sep 2025
Over the last 30 days the Massed Flies Prince Tavish's Crown's sell price ranged from 15.4 keys to 19.7 keys and is up 4.8% after 4 moves. Over a year it ranged from 8.62 keys to 24.1 keys (up 97.8%). Today's 19.7 keys sits in the upper third of its range: the lowest we have recorded is 8.62 keys (25 Oct 2025) and the highest 24.1 keys (26 Nov 2025). The price has moved 18 times since we began recording it — about once every 19 days.