Solid core power cords under 300$ - List of manufacturers ?

I would like to try a 2nd hand solid core power cord under 300$

What are my options?

I know following manufacturers:

Audioquest (Copper)
Cabledyne (Silver)
Nordost (Silver plated copper)

DIY is also an option for me.
(my devices draw 15 watts only (1 streamer, 2 mono blocks ))