Question about Backlinks importance (according to DA)

Hi all,

I wanted to ask you if backlinks from low authority domains help, I see people paying for 20DA authority links, while I always took care of at least get them from 30+ DA.
Is the same 10 links from 20DA than 10 links from 50DA?.
Why should people buy 20DA links?
And what is the difference between DA and TF?
Thank you for taking time to read me and answer, kind regards.

What are links worth? -> https://moz.com/blog/10-illustrations-on-search-engines-valuation-of-links

What is Domain Authority (by moz)? -> https://moz.com/learn/seo/domain-authority

What is Trust Flow (by Majestic)? ->https://majestic.com/support/glossary#TopicalTrustFlow

Thank u very much. I will read it.

what_hat? said:

What are links worth? -> https://moz.com/blog/10-illustrations-on-search-engines-valuation-of-links

What is Domain Authority (by moz)? -> https://moz.com/learn/seo/domain-authority

What is Trust Flow (by Majestic)? ->https://majestic.com/support/glossary#TopicalTrustFlow

Click to expand...

Thank you very much, you brought me important knowledge, very grateful too u.

ignorant22 said:

And what is the difference between DA and TF?
.
.

Click to expand...

the just use other dice to roll out the rankings..