According to people who already beaten the REE4 Remake DLC, the game has almost the same amount of content that Resident Evil 3 Remake at launch did (retail $60), but with reused content from the main game and adding more.
Having just beat the new DLC pack for RE4Make, I was left surprised at the amount of new content, even for one playthrough and it struck me that this DLC makes Resident Evil 3 even more of a ridiculous bad value proposition.
Took me around 4.5h to beat Separate ways and it maaaybe took me 5h to get through RE3Make (talking first playthroughs). With how much the RE3Make was gutted in comparison to the original game, I hope we get a proper remake down the line.