Review Akko Mod 001 Barebones Kit Review: The Best Barebones Kit For Beginners

Have a look at the TM680 - hotswappable, rotary encoder, and mostly easy to disassemble.* Only $60 for the wired version.

* Check youtube on how to disassemble the wireless version to avoid damaging the wireless switch.
 
Very few PC have a USB-C port built-in! $103 is not an entry level price for a keyboard either!
You don't need USB-C built in to your motherboard. It's usually just for the keyboard, which goes USB-C to USB-A (Keyboard USB-C, Motherboard or case USB-A)