You can sell it to them at a set wholesale price, allowing them to mark it up for retail.

你可以按固定的批发价卖给他们，这样他们可以提高价格零售。

《柯林斯英汉双解大词典》

We sell wholesale to several chains that sell retail to the public.

我们批发给几家向公众零售的连锁店。

《柯林斯英汉双解大词典》

He buys at wholesale and sells at retail.

他趸批零售。

《新英汉大辞典》