Oppo listed the R17 on its official website last week with a dummy price of CNY99,999. Today the cost was fixed and the company announced on Weibo how much the phone will actually set you back. The version with 8 GB RAM and 128 GB storage will be CNY3,499 which is nearly $510/450.
Source: https://www.gsmarena.com/oppo_r17_price_revealed-news-32837.php