In some areas there is a shortage of desirable, well-priced listings. Sellers who don't need to sell now are waiting for a better market. Many sellers who would like to sell now have unrealistic expectations about what a buyer would be willing to pay for their home.
One approach if you like a listing that is overpriced for the market is to keep your eye on it and wait for a price reduction. The risk of this approach is that another buyer might come along and start a negotiation with the seller. It would be unfortunate if you were to find out later that the listing sold for a price that you would have been willing to pay.