How expensive is the PCT?

I’m from the uk currently thinking on doing the trail next year and I have most of the correct gear due to doing some trails in Europe but wondering how much roughly will I need to save/spend? Is it possible to do it cheaper as I have heard people spend $18k+ on the trail?
Thanks!!

EDT thanks a lot for the information I’m guessing around 9-11k usd should be anough not including gear ive spent on already. Thanks for the help !