Demonic quill

item #33342 · buy limit — · 16 days of history backtested

Latest price: 59,541 gp instant-buy · 50,005 gp instant-sell
Last 24 h average: 79,470 gp high · 65,289 gp low · 97 traded

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Buy limit—

TypeMembers

Notenot in the current top scan — backtest below still applies

Price chart

drag to pan · scroll to zoom · hover for values

Candles use the GE's average instant-buy (wick top) & instant-sell (wick bottom) per period; bodies show period-to-period mid-price moves — the GE publishes no true open/close. buy bandsell band

Backtest — profit/day per unit by band

Each cell replays this item's history with that buy/sell percentile pair, no lookahead (bands from past data only). ★ = best. Hover a cell for flips & hold time.

buy↓ sell→	75%	80%	85%	90%	93%	97%
5%	25.1k★	22.3k	17.6k	15.1k	12.4k	4.4k
8%	25.1k	22.3k	17.6k	15.1k	12.4k	4.4k
12%	23.1k	20.3k	15.7k	13.2k	10.5k	4.4k
16%	23.1k	20.3k	15.7k	13.2k	10.5k	4.4k
20%	23.1k	20.3k	15.6k	13.1k	10.5k	4.4k
25%	24.8k	20.2k	15.6k	13.1k	10.4k	4.4k

Optimal buy 5% / sell 75% → 10 flips, 25.1k/day per unit (~19.4h hold) vs Default 12% / 93% → 5 flips, 10.5k/day (+140%)

Bands are a starting point, not a promise — the fill model is simplified and popular flips crowd (your buy gets bid up, your sell pushed down). How this works →

Unofficial fan project — not affiliated with or endorsed by Jagex. Data from the OSRS Wiki real-time prices API. A game, not financial advice; nothing here is automated and you shouldn't automate it (it's against Jagex's rules).

For information only - not financial advice. In-game Grand Exchange prices fluctuate and flips can lose value; trade at your own risk.