Ironic its a thread about Eshop games (and how not to waste money, and potentially get a bad one), and the first game you link, is one that has me think "that looks so indie, and dated, it seems like a waste of money".
Much harder to do that on Switch. Physical copies rarely have great deals (talking 50 percent off or better range), even the third parties, and they get snatched up fast when they do. Not even a week ago, I got a notification about Dragon's Dogma being on sale for half off at Best Buy. By the time I actually went to go check the site a few hours later, it was already sold out. Granted, it could have been four or five copies for the entire country for all I know, but that's happened with so many games I'm waiting to find an unopened copy of in a good sale.
Good eShop deals on AAA games are more common, but then all of the cash you saved from sales goes right back into paying for storage.