{"item_id":21543,"name":"Calcite","url":"https://runescapetrader.com/item/21543","unit":"GP","buy_limit":13000,"prices":{"instant_buy":{"gp":140,"observed_at":"2026-10-26T02:48:18Z","age_seconds":113436,"status":"stale"},"instant_sell":{"gp":128,"observed_at":"2026-10-26T04:20:21Z","age_seconds":107913,"status":"stale"}},"market_data_updated_at":"2026-10-26T04:47:27Z","source":{"name":"OSRS Wiki real-time prices","url":"https://oldschool.runescape.wiki/w/RuneScape:Real-time_Prices"}}