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》

Other settlements include two stations in Westchester County that Schneiderman said marked up the retail price over wholesale by more than 40 percent and a Spring Valley station that marked up the retail price over wholesale by 98 percent.

WSJ: NY cracks down on gas price gouging after Sandy

So the commission rules out a complete separation of the retail and wholesale businesses.

ECONOMIST: Banking reforms

The Consumer segment offers wire line services such as internet, telephony and television, and retail and wholesale wireless services.

FORBES: #954 KPN