At one time, Speedplays were the rage. Everyone had to have “Lollipops.”
They last and last and last. The pedals. Not quite the cleats, and you’d better have cleat covers.

I’ve been thrust into that market lately.
Pedals $100, unless you go with Ti axles.
Cleats $100 (the locking mechanism is in the cleats)
Cleat covers $25. essential to protect those expensive cleats.

The Zeros are not compatible with the X’s. Cleats are pedal-specific
This was a $100 lesson. Zeroes for sale!