Does anyone actually find this to be the case?
I've never made a site or product expecting that kind of conversion rate. I think there's far, far too many variables out there. The traffic, the offer, the copy and the niche are just for starers.
Perhaps in IM where we're all used to buying from these sales pages and they're all selling the same idea of passive income. But in general I'm really not sure I believe this idea of an average conversion rate which covers online sales pages.