EMD or Brand Domain for AZ Aff Site

(Mods; feel free to move this to the appropriate section. As usual I’m ignorant as can be when it comes to selecting the right section.)

Hello fellow BHW members.

Atm I am thinking about building a new Amazon Affilate niche site. During my research I came across an EMD.com for the keyword, and this site/domain can be bought via afternic for somewhere between 500-1000 US$.

Now for my question; is this worth it or should I get a “brand”* domain for 10 US$ and start with that?

Thanks in advance for any input!

*with brand I mean not an existing brand name like Nike, but a thought-up name that is semantically related to the keyword.

Brand Domain would be good. Instead of Buying EMD buy an Expired Brand Domain.