When looking into where is the cheapest to get this game for Switch i discovered that it's £30+ and it isn't even available in the UK on the Switch store (yet), if i had to guess i'd say it's gonna be same as the retail price. This is cheaper by a good £6 and digital for this kind of puzzle game is definately better in my opinion. Despite what you think about paying more than 79p for a Tetris game, this is still the cheapest by far.
Making multiple accounts on your Switch is essential in my eyes, having one for the three main regions (US, UK and Jap) was the first thing i did on mine. If you make a Japanese one now you can download a demo of this game :)
- This method literally takes 15 mins to set up once, once completed you can just keep the accounts on your Switch and buy off other regions whenever you want to.
-First of all, make a US Switch account using the following guide: http://www.nintendolife.com/news/2017/03/guide_how_to_access_the_nintendo_switch_eshop_for_multiple_regions
-Then you want to get some credit for your US account - cheapest way is obviously getting a $10 and a $20 card: https://www.pcgamesupply.com/buygames/Nintendo-Wii-Points-Card/
- These are completely 100% reliable ive used them tons of times with my American new 3DS and lots of Xbox credit.
-Apply that to your US account by redeeming the codes you receive in your email. When the game becomes available in the US (April 25th) then basically buy it and download and enjoy the craziness of this game!