Google hates, absolutely hates, the concept of link juice being bought as opposed to earned. Links are the defining signal that Google uses to evaluate the relevance and worth of a site. Thousands of incoming links from low grade sites screams 'gaming'. It's unnatural and you will suffer the search positioning consequences sooner or later. X3Int.Systems has proven track record of results in SERPs

Another reason that you shouldn't buy links is that it distracts you from the important job in hand. From concentrating your efforts on earning genuine, high quality links by building your web presence on great content and healthy happy relationships with other sites in your neighbourhood. Beware of SEOs that claim to guarantee rankings, allege a "special relationship" with Google, or advertise a "priority submit" to Google. There is no priority submit for Google.