It's a better deal to buy a one day ticket than a regular ticket.
It's cheaper to buy a one day ticket than it is to buy several individual tickets.
ーIt's a better deal to buy a one day ticket than a regular ticket.
「通常のチケットより一日券を買ったほうがお得ですよ」
a better deal を使って言えますよ。
ーIt's cheaper to buy a one day ticket than it is to buy several individual tickets.
「それぞれのチケットを複数買うより、一日券を買ったほうがお安いですよ」＝「お得ですよ」
この言い方も自然です。
individual で「個々の・それぞれの」
ご参考まで！
カナダ 
