All time lowest price for this collection (2 games).
For the Switch you need an US account.
If you buy it on the Australian store it is $2.99 AUD.
Vasara Collection Switch: https://www.nintendo.com/games/detail/vasara-collection-swit...
From the website:
For the very first time, highly acclaimed Japanese Arcade Shoot’em Ups - Vasara (2000) and Vasara 2 (2001) - are made available to the whole world via this package: VASARA COLLECTION!