It took me a little over 3k.
Wifi extender
Ethernet cable
Optical isolation to cleanup ethernet
Linear power supply for streamer
Streamer
USB cale to dac
Dac
Power cords for dac, isolator and linear power supply.
All described in my house of stereo system.
You do not have to spend the high amounts mentioned by many to achieve great sound. My system proves it. But for people who are willing to spend over 20k for a streamer, good for them.