{"item_id":6891,"name":"Arena book","url":"https://runescapetrader.com/item/6891","unit":"GP","buy_limit":15,"prices":{"instant_buy":{"gp":420420,"observed_at":"2026-09-07T01:00:39Z","age_seconds":418147,"status":"stale"},"instant_sell":{"gp":3479,"observed_at":"2026-09-07T01:00:49Z","age_seconds":418137,"status":"stale"}},"market_data_updated_at":"2026-09-11T21:09:11Z","source":{"name":"OSRS Wiki real-time prices","url":"https://oldschool.runescape.wiki/w/RuneScape:Real-time_Prices"}}