This is actually a pretty interesting one...definitely a niche and it's a .com.....it doesn't seem to have any search volume at all, though...however, if done right, it could be marketed as a great niche site. Hard to put a price tag on it, but hopefully that thought counts!
See if you can find a developer to somehow create a solution for you with Mapquest or Google Maps API, that will list diners!
I've sold a jewish domain for like $1,500. The most I've seen it go for when I searched was like $3k... If you do want to develop it, you may want to take a look at: shamash.org/kosher/, see if you can "scrape" (cough, cough - um pull) their information, and throw it on. You can monetize with opentable.com. There are also a number of API's that you can use to pull reviews on the restuarants you list. The best one is probably Yelp.
That is very good you could make money just by finding companies who would pay you to put their diner info on your website
Hi, thanks a lot everybody for your opinions, I will develop it during the coming weeks, I`ll keep you posted. Cheers!