Those prices were for KISSmetrics while you are looking at KISSinsights.
Ah, thanks for that. (I had just followed the OP's link, and hadn't known the distinction between metrics/insights.)
Look here: https://www.kissmetrics.com/signup
Re:KISSmetrics' bizarre pricing decision
by paraschopra on Tuesday July 13, 2010 @09:05AM
(#1511184)
This is about http://www.kissmetrics.com/
Premium - $29/month - 1k responses/month
Unlimited - $25/month billed annually - no limit of responses
Or has the OP gotten news/information of an upcoming price change?