[Question] Guestblogging on the higher segments

I notice in the lower segments that it's very normal to build every article with about 3-4 external links. All the links point toward the "money" domain on different pages. Now I notice that at guestblog articles where the buyer pays above €1.000, the blogger posts 1-2 external links to the money domain and 1-2 external links to some high authority website.

Can someone explain me why people choose one or the other? Pro's / con's? What can we learn from this.

Is there anyone, who can help us? I want to know the reason also.

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