Revenue – How many people start paying? And how much do they pay?
If you can’t convert an ‘Activated‘ website visitor to a customer, you won’t be in business for too long.
Test every conceivable permutation of product and price, targeting as many niche markets as you can dream up.
In all likelihood, your best customers will arrive on your doorstep from your email marketing campaigns, targeting people who’ve already activated through your website.