Community price on backpack.tf: 13.0–15.0 keys, last changed 2021-08-30 (5.1y ago). The live quote above, 13.3 keys, is inside the community’s range and last moved 12d 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: $30.35 — the lowest of one listing for the Massed Flies effect when we looked on 2026-10-13 01:41 UTC (6h 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 13 keys, 20 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 Antarctic Eyewear”, with no effect in the name — the effect comes from the individual listing.
Price history
142 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 Antarctic Eyewear sell price, 2025-09-25 to 2026-10-12: 142 observations, from 16.4 keys to 12.8 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
16.4 keys
10.9 keys
25 OCT 2025 · 17:56 UTC
14.2 keys
11.2 keys
14 JAN 2026 · 12:21 UTC
22.7 keys
12.4 keys
15 FEB 2026 · 22:41 UTC
19.6 keys
7.17 keys
15 MAR 2026 · 22:08 UTC
15.9 keys
6.85 keys
18 APR 2026 · 20:32 UTC
16.5 keys
7.96 keys
15 JUN 2026 · 00:32 UTC
17.1 keys
9.14 keys
5 JUL 2026 · 23:12 UTC
10.9 keys
9.45 keys
3 AUG 2026 · 15:12 UTC
13.3 keys
11.6 keys
23 AUG 2026 · 02:09 UTC
14.2 keys
12.3 keys
26 AUG 2026 · 02:09 UTC
14.2 keys
12.4 keys
28 AUG 2026 · 07:13 UTC
14.5 keys
12.5 keys
29 AUG 2026 · 20:10 UTC
14.0 keys
12.5 keys
31 AUG 2026 · 20:11 UTC
13.9 keys
12.4 keys
2 SEP 2026 · 20:08 UTC
14.1 keys
12.3 keys
6 SEP 2026 · 18:09 UTC
13.4 keys
11.9 keys
8 SEP 2026 · 06:09 UTC
13.5 keys
11.5 keys
11 SEP 2026 · 08:08 UTC
13.6 keys
11.6 keys
13 SEP 2026 · 02:08 UTC
13.6 keys
11.6 keys
14 SEP 2026 · 16:08 UTC
13.4 keys
11.4 keys
15 SEP 2026 · 12:08 UTC
14.2 keys
11.7 keys
20 SEP 2026 · 04:08 UTC
13.9 keys
11.8 keys
21 SEP 2026 · 02:11 UTC
13.9 keys
11.8 keys
21 SEP 2026 · 10:11 UTC
14.0 keys
11.8 keys
23 SEP 2026 · 02:08 UTC
13.6 keys
11.8 keys
23 SEP 2026 · 12:07 UTC
13.6 keys
11.8 keys
24 SEP 2026 · 00:09 UTC
13.6 keys
11.9 keys
26 SEP 2026 · 04:09 UTC
13.7 keys
11.9 keys
27 SEP 2026 · 04:08 UTC
13.8 keys
12.0 keys
28 SEP 2026 · 06:11 UTC
13.9 keys
12.0 keys
28 SEP 2026 · 16:08 UTC
14.2 keys
12.0 keys
1 OCT 2026 · 00:09 UTC
14.4 keys
11.8 keys
2 OCT 2026 · 04:09 UTC
13.5 keys
11.8 keys
2 OCT 2026 · 23:09 UTC
13.4 keys
11.8 keys
4 OCT 2026 · 07:09 UTC
13.7 keys
12.0 keys
9 OCT 2026 · 07:09 UTC
13.2 keys
11.5 keys
9 OCT 2026 · 15:11 UTC
13.3 keys
11.6 keys
10 OCT 2026 · 05:11 UTC
13.3 keys
11.6 keys
10 OCT 2026 · 23:10 UTC
13.0 keys
11.6 keys
12 OCT 2026 · 17:08 UTC
12.8 keys
11.6 keys
Price history in numbers
142 readings since 25 Sep 2025
Over the last 30 days the Massed Flies Antarctic Eyewear's sell price ranged from 12.8 keys to 14.7 keys and is down 6.5% after 71 moves. Over a year it ranged from 10.9 keys to 44.5 keys (down 14.1%). Today's 12.8 keys sits in the lower third of its range: the lowest we have recorded is 10.9 keys (5 Jul 2026) and the highest 44.5 keys (2 Jan 2026). The price has moved 137 times since we began recording it — about once every 3 days.