Links from Huffington Post or alike sites Query

[intmedia]

I see a lot of people who are selling links from Huffington Post or Forbes. They are usually of high DA (I am mentioning DA as a reference here).


And people are buying them. They are not much effective in a competitive niche or against quality links. But still they are in the market. I am just not getting it!! How is this possible and people are selling them how they get links from those big sites?