Check indexation and topical fit
Run a quick site: search in Google. If key sections are missing, indexation may be unstable. Your link only helps if the URL can rank and send traffic.
Read recent outbound links
Scan the last ten posts. Patterns of unrelated commercial anchors are a red flag. Strong editorial sites mix brands with context.
Compare price to expected value
Estimate traffic potential and ranking overlap. A mid-DR site in your niche often outperforms a high-DR general blog.