Community price on backpack.tf: 16.0 keys, last changed 2026-06-25 (2mo ago). The live quote above, 12.5 keys, is 22% lower and last moved 10d 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: $69.57 — the lowest of one listing for the Fireflies effect when we looked on 2026-09-01 01:39 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 12 keys, 30.55 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 Battle Boonie”, with no effect in the name — the effect comes from the individual listing.
Price history
5 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.
Fireflies Battle Boonie sell price, 2026-07-08 to 2026-08-26: 5 observations, from 14.3 keys to 12.5 keys.
Observed (UTC)
Sell
Buy
8 JUL 2026 · 14:41 UTC
14.3 keys
12.9 keys
19 JUL 2026 · 12:45 UTC
11.0 keys
9.56 keys
30 JUL 2026 · 14:43 UTC
11.4 keys
9.84 keys
17 AUG 2026 · 13:12 UTC
11.6 keys
10.2 keys
26 AUG 2026 · 10:09 UTC
12.5 keys
10.8 keys
Price history in numbers
5 readings since 8 Jul 2026
Over the last 30 days the Fireflies Battle Boonie's sell price ranged from 11.6 keys to 12.5 keys and is up 7.3% after 1 move. Over a year it ranged from 11.0 keys to 14.3 keys (down 13.0%). Today's 12.5 keys sits in the middle of its range: the lowest we have recorded is 11.0 keys (19 Jul 2026) and the highest 14.3 keys (8 Jul 2026). The price has moved 4 times since we began recording it — about once every 12 days.