3 sentences

1. 我父母买不起钢琴给我。

   wǒ fù​mǔ mǎi​bu​qǐ gāng​qín gěi wǒ.

   My parents couldn't afford to buy a piano for me.

   Source: OpenSubtitles

2. 我买不起这件裙子。

   wǒ mǎi​bu​qǐ zhè jiàn qún​zi.

   I can't afford this dress.

   Source: OpenSubtitles

3. 这辆跑车太贵了，我买不起。

   zhè liàng pǎo​chē tài guì le, wǒ mǎi​bu​qǐ.

   This sports car is too expensive; I can't afford it.

   Source: Dong Chinese Dictionary