Community price on backpack.tf: 89.0–100 keys, last changed 2018-07-01 (8.2y ago). The live quote above, 36.7 keys, is 59% lower and last moved 19d 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
11 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 Duck Billed Hatypus sell price, 2025-09-25 to 2026-08-18: 11 observations, from 99.6 keys to 36.7 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
99.6 keys
72.5 keys
30 SEP 2025 · 21:26 UTC
99.4 keys
72.4 keys
9 OCT 2025 · 09:08 UTC
95.0 keys
76.1 keys
19 OCT 2025 · 20:56 UTC
90.3 keys
72.4 keys
25 OCT 2025 · 17:18 UTC
86.0 keys
68.9 keys
10 NOV 2025 · 01:19 UTC
91.4 keys
73.2 keys
1 JUL 2026 · 21:12 UTC
31.8 keys
27.6 keys
29 JUL 2026 · 02:45 UTC
32.9 keys
28.6 keys
3 AUG 2026 · 10:24 UTC
34.2 keys
29.7 keys
13 AUG 2026 · 23:12 UTC
34.2 keys
29.7 keys
18 AUG 2026 · 07:10 UTC
36.7 keys
32.0 keys
Price history in numbers
11 readings since 25 Sep 2025
Over the last 30 days the Massed Flies Duck Billed Hatypus's sell price ranged from 34.2 keys to 36.7 keys and is up 7.2% after 1 move. Over a year it ranged from 31.8 keys to 99.6 keys (down 63.1%). Today's 36.7 keys sits in the lower third of its range: the lowest we have recorded is 31.8 keys (1 Jul 2026) and the highest 99.6 keys (25 Sep 2025). The price has moved 10 times since we began recording it — about once every 33 days.
Collector's Armored Authority