How to Build a CSE Budget That Delivers Returns

First, we looked at the top 10 CSEs by overall revenue and found a significant difference between the top player in terms of percentage of revenue generated (Google Shopping at 45 percent) and the last (TheFind at .1 percent).

Nextag, Shopzilla, PriceGrabber, Shopping.com, Bizrate, Become, Pronto and Bing also made the list.
We also looked at CSEs by overlap and RPC. We found that the highest percentage of conversions without overlap from search engines comes from Bing at 38 percent, followed by Google and Shopping.com at 26 percent.