So far, I only bought the 3 main rulebooks and Against Reptile as soon as they were released.
After that, I broke down and got two others. but pretty much stopped since not running games.
However, if this ginormous bundle was broken up into one where all the handbooks (and probably the main 3 books) went and another with the modules (and 3 main books - if you got both bundles, you aren't buying it twice anyway) it would be more likely to get buy in.
It's too much to ask that FR stuff be separate than WoG stuff (2 different module bundles - both with 3 Rulebooks and the "non-world-specific" modules in both) but I figure mention it at least even if the first main thing hasn't happened.
Not sure what a complete buy today is, since I own several of the more expensive parts - but pretty sure it's a big one for single buy.
I've kept up with DLR because it started big but not HUGE and have kept up with new add ins as they happened.
Stopped getting 5E bundle because newer stuff wasn't interested enough in to get considering it's not my preferred system. And I never DM 5E. Was just my FG support and to poke through the pretty maps with pins on it ;)