Number of clicks not related to smart pricing. Smart pricing only affect the CPC Try change the ads placement
What kind of site is it? Different sites have wildly varying click-through rates. Forums tend to be hard to monetize, for example, because the visitors tend to get ad-blind very quickly, requiring massive amounts of traffic to earn a good return.
No, you won't get smart priced for low CTR. What you need to do is integrate your adsense blocks better for more clicks. Some niches/sites have different requirements as to location and type of adsense blocks. TomG.
Low CTR always related to placement of your adsense. Try to improve on optimization of the ads. Google always give us some tips on how to better optimize our ads placement.