Black mask (10)members
“A magic cave horror mask.”
About this item
The black mask is a unique mask worn in the head slot. The mask has the same stats as a black med helm. It provides a player 16.67% Attack and Strength boost against all monsters on the player's current Slayer task. It requires 20 Strength, 10 Defence, and 40 Combat to equip.
From Black mask on the Old School RuneScape Wiki, used under CC BY-NC-SA 3.0.
- Buy limit
- 70 per 4h
- High alch
- 1,800
- Shop value
- 3,000
- Traded last hour
- 15
Alching it yields 1,650 after the nature rune, 856,405 less than it costs to buy. Alching it is a loss, so the price floats free of the alch value.
One unit, right now
- Buy at (instant-sell)traded 7m ago
- 858,055
- Sell at (instant-buy)traded 8m ago
- 868,812
- Spread
- 10,757
- Tax on the sale
- −17,376
- Margin per unit
- -6,619
Breakeven sell price is 875,567 — a spread of 2.04% just to clear the tax.
Your 1.00M
- Buy limit per 4 hours
- 70
- Units you can fund
- 1
- Capital required
- 858,055
- Profit per window
- -6,619
Price is thin, governed by the slower side at 8m.
Prices refreshed 4m ago.
Against its own history last 90 days · 91 daily bars
wider than 5% of the last 91 days
23% of the way up its 90-day range
Measured with medians rather than averages, because one spike — an update, a streamer, a brief squeeze — drags an average around for weeks afterwards and makes everything since look ordinary. Worth noting here: this item typically moves 2.37% in a day, which is more than the 1.25% you would be capturing — so holding it overnight risks more than the flip makes.