This art is one of the collection of 7-year-old artist Chibi (チビ画伯) based in Japan.

女の子は生まれてはじめて自分で買い物をしました。どきどきとわくわくなきもちで、むねがいっぱいになりました。買ったものは100円だったけど、それよりずっと高いものを買ったきもちでした。

For the first time in her life, the girl did her own shopping. Her heart was filled with excitement and thrill. The purchase was only 100 yen (about 1 USD), but she felt like she had bought something much more expensive than that.