[ryankelly]

my guess on the pricing jump is because culling keyword suggestions from the Google API get's real expensive (if that's where they are getting them from). Going to get the rankings from the SE's is a free API call, but suggestions cost money.

But the idea of adding incremental cost is also a good idea, but it has to be engineered into the merchant system and upgrade page, plus it really gives nobody an incentive to jump up to the next pay level. But I see your point.