Somebody's going to point out that digital games go on sale more reliably and conveniently than discs do (and therefore cost less, on average), and then you're going to say something like "the true cost of digital is that Steam will blow up your computer and steal your games and shave your dog," and then everyone is going to laugh at you. Calling it now.
Untrue. Discs drop in price all the time, not just holidays or events. Digital rots for a long time before anyone remembers the price should be lowered. And of course as soon as Steam decides it no longer wants to work online you lose access to it all anyway.
Physical gives you more, costs less, and is more reliable.
I haven't had to buy a digital game at full price in years ---