多sku-所有显示促销价都相等（展示一个价格）

https://juan.sltestteam.shop/products/%E5%A4%9Asku-%E6%89%80%E6%9C%89%E6%98%BE%E7%A4%BA%E4%BF%83%E9%94%80%E4%BB%B7%E9%83%BD%E7%9B%B8%E7%AD%89-%E5%B1%95%E7%A4%BA%E4%B8%80%E4%B8%AA%E4%BB%B7%E6%A0%BC-