Backlink research

Hello!

I would be interested in how you analyze backlink. So you get an offer or you come across a backlink that you would like to have, but you don't know if it is worth the money.

I currently do this via Ahrefs, where I look at traffic, value, as well as their backlinks and keywords.

What other parameters or tools do you use? How do you determine the value of a backlink?

Looking forward to your answers!