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 ))
128x128zuio
Listed = NRTL , UL is just one example.


While there are other testing laboratories, they're going to test the product  for compliance with UL Standards, as compliance with UL safety standards is what allows you to buy product liability insurance.

Well, at least we’ve ratchet down from illegal to just liable. I’m pretty sure real audiophiles don’t care. Full steam ahead, damn the torpedoes! 
If you want much of the benefits of solid core, but with flexibility?   Litz wire would give you that benefit.  Pangea combines solid core with litz.... both worlds in one cord.