CATL is already producing sodium ion at competitive prices. Expect 5-10 years to end up with a flood of stationary battery products based on them, at prices less than LFP.
Apparently, it's almost impossible for wrecker yards to get rid of EV car batteries, even if the battery pack is still fine (but the car was totaled).
Key difference between them and LFP/Li-Ion is the charge/discharge curves and termination voltage are radically different.