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Dragon harpoon

item #21028 · buy limit 5 · 15 days of history backtested
Buy band2.52m
Sell band2.76m
Margin (after tax)185.5k
ROI7.4%
Profit / 4h927.6k
Capital12.58m
Exit0.4h
Risklow
Volume / h13
Buy limit5
TypeMembers

Price chart

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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%24.3k31.0k31.0k30.6k34.2k34.2k
8%23.2k29.9k29.9k29.5k33.1k33.1k
12%23.2k29.9k29.9k29.5k33.1k33.1k
16%27.4k34.2k34.2k33.8k32.8k32.8k
20%37.2k40.5k★40.5k40.2k39.2k31.1k
25%37.2k40.5k40.5k40.2k39.2k31.1k

Optimal buy 20% / sell 80% → 5 flips, 40.5k/day per unit (~14.8h hold)  vs  Default 12% / 93% → 3 flips, 33.1k/day  (+22%)

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).