@troidelover1499 since you’re a skeptic, your options are to either go with a new power cable or buy used to be able to resell to recoup your spend.
In both cases I recommend sticking with established brands (Audioquest, Nordost, Wireworld, DH Labs, etc.)
With new you have Music Direct and Upscale Audio who offer 60 day returning policy. In this case you’re bound to 1 - need to break in the new power cord (around 200hrs), 2 - pay retail if you end up keeping it or 3 - absorb the return shipping then head in whatever direction you decide on, back to stock cord or look for a used one.
Opting into “boutique bargain” brands like Zavfino, Audio Envy, Cullen, etc. will be a guessing game where you will get what you pay for, potentially not going to be able to return due to restocking fees and end up wondering how an Audioquest power cord would sound like with your amp.
Also, the recommendation above about reading the Counterfeit Chinese Cables thread should be limited to just reading that…I wouldn’t follow any of those recommendations for many reasons.