Trust Link term explained
Trust link - a slang expression implying a link that transmits a good weight (usually index page) and thanks to which the site faster goes to the first position in the SERP. Typically trust link to as links from resources with high citation indexes.
For example, on the main page of Yandex there is a trust link to the website of the Studio of Artemiy Lebedev.
Trust links are highly valued in SEO, it is rather difficult to get to your website and therefore their price can vary from $100 and above. Such links often lead to the home page of acceptor, thereby raising document for highly competitive query in the search engine results. To buy a trust link you can in SEO forums or special stocks.