Just thought I should expand on something I alluded to in the earlier post. There are people who think skinny tires and more frequent flats go hand in hand. While I don't agree with that I would say that running skinnier tires requires more due diligence to reduce the the risk of flats.
As I said earlier, the stock tires on a road bike may not offer much in terms of flat protection. Before buying the bike, find out which tire is on it then do a google search on the name of the tire and include the word "review" in the search. You'll find out quickly enough if that tire is susceptible to flats or not. If it is, you might be able to negotiate on a break in the price for a better tire with the LBS.
Also with skinny tires it's more important to make sure they are inflated to their proper pressure in order to avoid pinch flats.