Personally, and this is analytics aside, I found your first page hard to read. There was too much content in my opinion because it was very wordy. I found myself quickly scrolling down the page looking for a call-to-action but didn't find one until I reached the very bottom with the order form.
The first page goes all in with everything about the Venus Factor. Also, is this product you are promoting gender specific? The phrase: "claims to make any woman lose weight and shape the body belonging to any age group within only 12 weeks." makes it feel that way. Are you sure you only want to target women?
What I would suggest is that you shorten your homepage drastically, making it a page to capture the interest by summarizing what he or she is there for. Have an "order now" or "sign up" call-to-action at the top of the homepage as well as the bottom.
The same can be said (about call-to-action buttons) for all your pages. Don't go crazy by plastering them everywhere on each page, just a couple will do.
On another note, I noticed the About Us page is far less wordy than the homepage but yet it's even harder to read because your paragraphs are too big. Did you know that many people won't make it past the "about" page if it doesn't make sense or doesn't have a call-to-action? Look at the following line:
"Being independent, we are happily using the domain …