Design's traffic estimator tool by default is set to broad match. If you want to see an estimate of the value of a specific phrase remember to wrap it in [brackets] instead of just submitting the broad matched version of the keyword term. I just reprogrammed my keyword research tool's traffic estimator link to include the broad, phrase, and exact match of each term. Since my tool is driven from Design's it strips the s in some plural phrases, so the link to the traffic estimator tool gives all 3 match types, and links to all 3 match types with an s appended to the end of of the keyword phrase.
Designbook.com