Guaranteed rankings
A link seller does not control Google’s rankings. Treat promises of specific ranking positions or guaranteed timelines as marketing claims that require skepticism.
Metrics without context
A seller that shows only DA, DR, or TF while refusing to discuss domain history, relevance, indexation, content, and outbound links is giving you an incomplete picture.
Unrelated placements
A backlink inserted into content with no real relationship to your target can signal that the site exists to sell links rather than serve readers.
Aggressive anchor prescriptions
Be cautious when a provider pushes repeated exact-match anchors without reviewing your existing profile or business context.
Vague permanence
“Permanent” and “lifetime” should be explained. Domains expire, sites change ownership, pages are removed, and businesses close.
No risk discussion
Any provider selling paid ranking links should be able to discuss Google’s current policies without pretending the tactic has no downside.
Important policy context
Google's current spam policies identify buying or selling links for ranking purposes as link spam. Google also says paid advertising or sponsorship links can be legitimate when appropriately qualified with rel="nofollow" or rel="sponsored". Read Google's spam policies.