Domestic copper prices, which had increased sharply over the past year, may drop gradually to average Rs 720-725 per kg in 2022-23, Crisil said on Thursday. The price of copper wire bars averaged Rs 738 per kg (ex-factory) in FY22, a 42 per cent rise year-on-year, with rates breaching Rs 800 per kg in March before retreating to Rs 790 per kg.