Using a PPC strategy was a good idea. From your perspective, it’s worked and it’s making you money. The figures tell the story. The click through rate is above average. The keywords and ads are working well. And you’re getting a satisfactory conversion rate and ROI. But simply taking your results at face value can give you a false picture. Because you can be making a big mistake when looking at these. The criterion of success for PPC search is whether it can meet your goals profitably through conversions.
More here:
When Paid Search May Be Losing You Money and You Don’t Know It