ok so, you got 25 thousand visitors and no sales. So, I think your traffic is not targeted and maybe coming from a program like traffic swarm or something like that?
To answer your question though, the ideal situation for all this making moneey stuff is to have a page about lets say "shaving devices" thats on the number one page in google for that specific keyword. So the traffic that you will be getting is looking for shaving devices. Get what I am saying? So if you get 25 thousand visitors looking for sometihng else thats different from your ads then, you will wont get any sales.
feel free to ask me more questions I would be glad to help.