What do you guys use for third party analytics, especially for eCommerce sites with ranging sales conversions? Omniture is a little expensive, so is SalesForce, Urchin, Google Analytics, etc... Also, if you are running a subscription based service, is there a way to track the prolonged lifetime value of a customer? ($10/month -> he stays for 9 months -> $90 should be tracked instead of the initial $10)
Can someone please help? Im sure eCommerce Adwords tracking is a common issue, as it seems a lot trickier to implement properly and effectively.