The lines are getting blurred with terminology to the point that this becomes an answer with an asterisk attached, but...
For "remasters," from basic ports to visual upgrades all the way to gameplay tweaks? I'm thinking like the RE1 port for the DS, or a recent (and better, honestly) example, Crisis Core Reunion, I think a price break is the honorable way to conduct business. I'm Square's case for CCR, the updates made to the Battle system and the exploration QoL improvements with the visual boost could have easily justified a full retail price for me, but it's a very transparent way of communicating with your customers. It feels very "We're not gonna act like you guys are complete idiots and say this is a new product from the ground up, here's a discount," and, despite surely being a business strategy in and of itself, it just *feels* warmer and softer than "Yeah, we modernized performance, now give us sixty bucks, you fucking gullible plebs,"
Conversely, for Remakes more along the lines of the big hitters in recent memory - the RE Remakes, FFVII, etc, I personally feel enough new work and new ideas and new material has been produced to justify a full price retail sale.
Tl;dr: I'm willing to pay more for what was obviously more work for the developers. Slapping a PS1 game on a PS5 with an updated opening movie and menu does not a $60 purchase justify.