Japanese by Example
Learning through examples in manga

Going to buy mugs with 〜に行く

ご注文はうさぎですか? » Volume 1 » Page 51

Talking about the coffee cups, Cocoa recalls an interesting cup she had found. She suggests going to buy it sometime.

ココア:
今度(こんど)()いに()かない?
"Why don't we go buy some?"