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》

Using the Yangcheng brand, vendors can mark up a crab's price by at least 30 percent.

供应商们使用“阳澄”品牌，就能把一只螃蟹的价格调高至少30%。

youdao

In addition, each store can adjust prices of the products by specifying a mark-up or mark-down from list price, or by specifying the actual prices.

此外，每个存储可以通过指定定价的上标记或下标记来调整产品的价格，或指定实际的价格。

youdao

He was planning to sell the goods at 100% mark-up on the price he had paid after importing them through an unauthorised supplier in China.

BBC: Internet counterfeit goods seller Michael Reeder jailed

So clearly, opponent has a huge impact on the eventually secondary price mark-up.

FORBES: The Brand Significance of Packers, Cowboys, Patriots Evident in Road Secondary Ticket Prices

He secured a 42% premium to FleetBoston's current share price (the mark-up is usually 20-30%), and this for a bank that has had to recover from a string of strategic mistakes: FleetBoston is now focusing on consumer finance after losing a packet in more exotic businesses, such as Latin American debt and dotcom venture capital.

ECONOMIST: A Titan or a Titanic price? | The