o.n.o.
noun UK
（用于广告中表示可以接受稍低的价格）或接近的价格，可还价（or near(est)的缩写）
written abbreviation for or near(est) offer: used in advertisements for things that people are trying to sell to show that they will accept slightly less money than the price they are asking for
Ladies' bike - excellent condition. £80 o.n.o. 女士车——性能良好。价格：80英镑，可议价。