{"item_id":21543,"name":"Calcite","url":"https://runescapetrader.com/item/21543","unit":"GP","buy_limit":13000,"prices":{"instant_buy":{"gp":105,"observed_at":"2026-09-11T16:23:32Z","age_seconds":5718,"status":"stale"},"instant_sell":{"gp":105,"observed_at":"2026-09-11T17:46:42Z","age_seconds":728,"status":"fresh"}},"market_data_updated_at":"2026-09-11T17:58:11Z","source":{"name":"OSRS Wiki real-time prices","url":"https://oldschool.runescape.wiki/w/RuneScape:Real-time_Prices"}}