Well, at 100 Bucks you won’t find any decent headphones - at least not new.
Check out AKG K271 MK II, Shure SRH840 or Beyerdynamic DT990 Pro, they offer really great quality and more important linear sound and you should find them used at about your budget.
But bear in mind that especially the bass frequencies and the stereo image is challenging to mix proper on headphones… at least this is what I have experienced.
Cheers,
C