Yeah, I've always watched to see if there would be a sale for those games and there's been nothing so far. Nintendo's got the two case bundle and seems to think $10 off for the two of them is good enough. However, last year I realized a gold coin strategy in which I made sure I collected all the gold coins from physical games I'd bought were acquired. (I've had a bad habit of not doing that because I'll leave games wrapped and on my shelf keeping them new until I get around to playing them and thus missing out on gold points.) I was also able to borrow Switch games from my library. Not every library may have that option but by doing so, about half the time, I could collect gold points from those games. (It seems some other people were smart enough to collect gold coins this way also but it's also further frustrating. Clearly, Nintendo is able to keep track of which cartridge has already collected gold coins. If so, why limit it to one year for that cartridge to collect its gold points?) By doing this, within a year, I then used that gold point collection on the two case and was able to pretty much knock off half the price for it and make my own sale for them.
I'm shocked and surprised this new game will get a physical release as I'm still not sold on our shiny digital future and really don't like being forced to do digital only.