This price has not changed since 2026-08-17 09:11 UTC. It reflects the last observed trade rather than current market value, and this page is excluded from our sitemap for that reason.
Community price on backpack.tf: 145–149 keys, last changed 2022-01-30 (4.7y ago). The live quote above, 11.7 keys, is 92% lower and last moved 2mo 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: $1025.83 — the lowest of one listing for the Roboactive effect when we looked on 2026-10-06 01:29 UTC (7d 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 11 keys, 42.11 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 Bubble Pipe”, with no effect in the name — the effect comes from the individual listing.
Price history
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.
| Observed (UTC) | Sell | Buy |
|---|---|---|
| 25 SEP 2025 · 03:29 UTC | 149 keys | 119 keys |
| 30 SEP 2025 · 20:42 UTC | 149 keys | 118 keys |
| 9 OCT 2025 · 08:26 UTC | 142 keys | 124 keys |
| 19 OCT 2025 · 20:12 UTC | 135 keys | 118 keys |
| 25 OCT 2025 · 16:32 UTC | 129 keys | 112 keys |
| 10 NOV 2025 · 00:33 UTC | 132 keys | 116 keys |
| 24 JUN 2026 · 15:12 UTC | 63.6 keys | 55.3 keys |
| 3 JUL 2026 · 01:12 UTC | 62.3 keys | 54.2 keys |
| 22 JUL 2026 · 10:45 UTC | 46.9 keys | 40.7 keys |
| 29 JUL 2026 · 02:45 UTC | 67.8 keys | 58.9 keys |
| 3 AUG 2026 · 06:24 UTC | 63.6 keys | 55.4 keys |
| 11 AUG 2026 · 01:12 UTC | 50.4 keys | 43.8 keys |
| 17 AUG 2026 · 09:11 UTC | 11.7 keys | 10.2 keys |
Price history in numbers
13 readings since 25 Sep 2025The price has not been re-read inside the last 30 days. Over a year it ranged from 11.7 keys to 135 keys (down 91.4%). Today's 11.7 keys sits at the bottom of its range: the lowest we have recorded is 11.7 keys (17 Aug 2026) and the highest 149 keys (25 Sep 2025). The price has moved 12 times since we began recording it — about once every 27 days.
| Window | Low | High | Change | Moves | Readings |
|---|---|---|---|---|---|
| 90 days | 11.7 keys | 67.8 keys | −75.1% | 4 | 5 |
| a year | 11.7 keys | 135 keys | −91.4% | 9 | 10 |
Details
| SKU | 597;5;u72 |
|---|---|
| Last price change | 2026-08-17 09:11 UTC |
| Key rate when recorded | 64.33 ref |
Same effect, other items
the effect across the catalogue| Item | Value | Updated |
|---|---|---|
| 5,500 keys | 11mo ago | |
| 2,950 keys | 11mo ago | |
| 2,400 keys | 11mo ago | |
| 1,400 keys | 11mo ago | |
| 1,161 keys | 11mo ago | |
| 1,145 keys | 15d ago | |
| 1,100 keys | 11mo ago | |
| 811 keys | 11mo ago | |
| 774 keys | 11mo ago | |
| 602 keys | 2mo ago |
Other effects on the Bubble Pipe
same item, different effect| Item | Value | Updated |
|---|---|---|
| 233 keys | 9mo ago | |
| 159 keys | 2mo ago | |
| 155 keys | 4mo ago | |
| 135 keys | 13d ago | |
| 112 keys | 12d ago | |
| 109 keys | 11d ago | |
| 66.9 keys | 12d ago | |
| 64.7 keys | 2mo ago | |
| 65.8 keys | 11d ago | |
| 62.6 keys | 13d ago |
Priced similarly
across the catalogue| Item | Value | Updated |
|---|---|---|
| 11.9 keys | 1mo ago | |
| 11.7 keys | 1mo ago | |
| 11.7 keys | 2mo ago | |
| 11.8 keys | 12d ago | |
| 11.7 keys | 2mo ago | |
| 11.7 keys | 2mo ago | |
| 11.7 keys | 2mo ago | |
| 11.7 keys | 3mo ago |