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Dragon harpoon

item #21028 · buy limit 5 · 15 days of history backtested
Buy limit5
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%26.6k27.4k27.4k34.4k★34.4k34.4k
8%33.2k34.0k34.0k34.4k34.4k34.4k
12%32.8k33.6k33.6k34.0k34.0k34.0k
16%31.7k32.5k32.5k34.0k34.0k34.0k
20%31.7k32.5k32.5k34.0k34.0k34.0k
25%28.0k28.8k28.8k30.3k30.3k30.3k

Optimal buy 5% / sell 90% → 3 flips, 34.4k/day per unit (~29.7h hold)  vs  Default 12% / 93% → 3 flips, 34.0k/day  (+1%)

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.
More tools from the same maker: PokePulse — Pokémon card prices · ESO Decoded — every ESO set, decoded · EveryGameMade — fact-checked game encyclopedia · Mistfall Hunters — the honest Mistfall Hunter guide