The sub $50 category of IEMs have some incredibly good choices at the moment.

My personal faves at the moment sub 50 dollars are the QKZ HBB - love that bass along with all the rest of the tuning and technicalities.

Rest would be:

2: Truthear Crin Zero 3: CCA CRA (original not the plus) 4: 7hz Zero (loved them at first but then realized they were a bit too light on the low end )