rish3 - 10:16 pm on Jun 4, 2013 (gmt 0)
Stop chasing high traffic keywords, and discover the long tail.
"Cheap green widgets" certainly has less volume than "green widgets", but the conversion rate more than makes up for it.
As a bonus, both your competition, and Google, aren't as focused on the long tail. Easier to rank, and Google may not yet have plastered it with their own supplemental ads and/or local listings.