I have been looking at buying links from the market place. Almost all providers seem to not provide a report, and they block the crawlers like Ahrefs, Majestic & Moz. You apparently get a report showing metrics, but no URLs. Since I do not get a report and I cannot see the back links, how do I know that the links are actually there? Am I to simply trust the seller on this? I understand that the sellers are not giving out reports as a form of protection from say a Google employee trying to figure out the network. But since they do not block Google from crawling, the employee could simply look up inside the Google index and get the links anyways. In this case, the only person who cannot see the links are the customers. How do you guys buy links without knowing the seller personally and knowing that you are not getting ripped off?