I've a few comments/questions:
(1) Why is this an "ebook"? It's just one page. It loks like a salesletter/flyer.
(2) Who is the market for this and how is it going to be delivered?
(3) Why are the pictures of the ads the size they are? Is this lifesize? If so, you need to get better resolution on the pics as the taxi pic has unreadable text on it.
(4) You start by asking a question but, unless you've done some pre-selling, it's a question you've not given the reader a reason to answer in your favour.
Before you ask the question, you've got to explain the benefits/results of having their ads on a key-ring.
(5) Personally, I'd drop your logo from the top of the page as it's not the lottery you're selling here.
(6) You've quoted prices at the bottom, you should indicate either (a) how much you're putting in yourself to subsidise it or (b) what it would cost normally to buy these (I know you said "half the price", but you should show numbers for this).
(7) Do people in the UK use the word "keepsakes"? I don't think I've ever heard it in the real world.
Hope this helps.
Steve