In my opinion, how a home shows means alot in terms of market time and the gap in listed/selling price. If an owner has priced it right to begin with (which is a possibility) and it shows very well, it'll probably have a better record of selling to asking price.
It does depend on area, and I've seen home pricing to be much more competitive than in recent years. Incentives being offered will also greatly affect the gap (more incentives, usually means a smaller gap).
Mark Edwards, East West Realty
Go the http://www.SandySoldMyHouse.com and click on Market Snapshot (about 1/2 way down the home page) to learn more or to sign up to receive free email reports for as long as you desire -- and with no need to talk with an agent! However, if you want more information, just email of call the sponsoring agent.
Let me state that I am not in your area, so I cannot attest to your local market. Just saw your question, and wanted to point out what I think is a common misconception. You are wise to ask this question as a seller to be prepared for what a buyer's expectation will be. The media, and unfortunately many agents as well, have implanted such figures in their heads. "Homes selling for 10% off of list price!" The problem with such sweeping figures is that the basis for the assumption is that all list prices are created equal. There will be properly priced homes which sell much closer to list price, and not-so-well priced homes that will sell for substantially less. So while it is a good idea to have that data available when negotiating with a prospective buyer, be aware that the amount of negotiating you will ultimately have to do should be based on how your specific list price relates to the actual market value of your home. Not market averages. Best of luck getting it sold!