How much do you think this domain is?

I'm looking for a domain at this level, but I can't see it very well.

And I also wonder if the activation remains the same even if I purchase the domain, initialize the blog data, and install and use a new platform.

these numbers don't mean a lot, you need to check the backlinks manually (also their anchor texts)... And you also need to check the domain name itself because short, brandable, catchy, interesting, or even EMD domain names can boost the value of a domain considerably.

For example, a domain like thisismygreatdomainname.xyz with DA of 40 might sell for way less than greatdomain.com with DA 0. It could be a case of $80 vs $1500, this kind of numbers we are talking about if the right conditions are met (the name itself, the domain's length, the industry / topic it represents, its SEO value, the perceived value of the potential buyer, etc..)