Is a 4.7+ Amazon rating with only 30-50 reviews trustworthy?

Treat it as a positive signal but not a verdict. Small-volume averages are easier to skew, so we cross-check against verified-purchase reviews at Home Depot or Walmart and against specialist-community sentiment. A set with 1,000+ reviews at 4.3 stars often tells you more about real-world durability than a 4.9-star average on 40 reviews.