事前 じぜん購入 こうにゅう割引 わりびき運賃 うんちんだったら
jizenkōnyūwaribikiunchindattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 事前購入割引運賃

1. If/when purchased in advance, the discount fare

Tara Conditional