I'm starting it. I will describe (almost) everything
Hello HN. I decided to start my own small, very small 'startup' which will provide web services. The goal is to make it in 60 days with no funds. The problem is that I have a full time job. I will share the most I can do on a blog especially made for that. Please comment !
blog : http://www.socialmkt.net/
Edit : Oh yeah and please, wish me luck !
Sounds like you're starting with a manageable but potentially useful site. You've researched the niche a little and it sound like there could be a market. That's a good start.
One suggestion - why not scrape or take some sort of feed (API/RSS available?) from the vendor's sites instead of relying on them updating your DB. It seems to me that relying on the input of any except the cheapest vendor might be a little unrealistic.
Oh yeah, best of luck!