TheRodinhoods

Starting a price comparison site for books

I am planning to start a online price comparison site which will allow users to search for books of their choice and display the price of that book apart from other details like delivery details, COD option available or not etc at various online bookstores.

Apart from that, It will also have a blog where we will review latest books and always conduct contests and giveaways on a regular basis.

I have a few queries. It would be extremely helpful if you can help me to sort them out.

1. There are a couple of other large players in this space. Is there any scope for a newcomer in this niche?

2. Since I am not much into coding/designing I will have to outsource site designing/development. What will be the approximate charge of creating such a site? 

3. What are the revenues I can expect from such a site if I have a modest traffic and monetize the site with affiliate links to product pages at online stores? I am thinking of taking up this work as a side project which will enable me to make some modest amount every month.(Even 3-5k every month to start with will be good enough)

It would be extremely great to hear from you guys.  Please do share your opinion and feedback.