2 sentences

1. 这家公司的股票在市场上以高溢价交易。

   zhè jiā gōng​sī de gǔ​piào zài shì​chǎng shàng yǐ gāo yì​jià jiāo​yì.

   The company's stock is trading at a high premium in the market.

   Source: Dong Chinese Dictionary

2. 由于供应短缺，商家对新款手机进行了溢价销售。

   yóu​yú gōng​yìng duǎn​quē, shāng​jiā duì xīn​kuǎn shǒu​jī jìn​xíng le yì​jià xiāo​shòu.

   Due to supply shortages, merchants are selling the new phones at a premium.

   Source: Dong Chinese Dictionary