

A fairly plain feather.
Black feather has a wide margin right now: instant buys at 10 gp against instant sells at 5 gp, 100% apart. After the 2% Grand Exchange tax, the margin leaves 5 gp profit per item. 17 units changed hands in the last hour. GrandExchanger counts it in the Skilling Supplies sector. It is a members-only item. Game facts on the OSRS Wiki

0 buy · 1 sell · 0 neutral
No clear momentum direction.
Within normal trading range.
Above VWAP: trading above the average. A possible time to take profit.
Momentum is neutral.
Low volatility: the price is fairly stable.
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