I don't have a very scientific approach to this, not analyzing my stats very much etc, but I can say that I
do make sales from the index page as well... And as far as I remember, the sales are divided pretty much equally between the index and main pages and a bit less on gallery pages.
But I do advertize quite heavily on index, and often with hardcore images and banners too.
As far as sales go, I am not selling anything to speak off these days either, I choose to blame the worldwide economic panic and not my sale skills, but who knows
