To me, that doesn't make sense. But I'm a newbie so there you go.
1. [exact match]
2. "phrase match"
3. broad match
So that's the order? That's useful to know, thanks. I typed it out to try and make it stick in my head better :)
Now, the simpler phrase 'widgets' gets an inundating tidal wave of clicks but they're not targeted. Even at 5¢ per click a zillion clicks adds up to a small fortune, but for ROI conversions to sales, they're way less useful than that smaller, narrowly targeted volume of clicks defined by 'wholesale tropical hardwood'.
I don't know, but that might help explain the cost difference in your case. A zillion clicks can wipe out your budget real fast if it's a generic, high-volume term, no matter how cheap the CPC.