Also - you might wish to sign up for a product called Market Snapshot - its on my web site - front page, its free, and you can ask to get updates monthly (default) or more often.
Buyer's and their agents have access to way more than enough information to figure out market value. Buyers will only move forward with the "best deals". To put this in perspective, over 80% of the buyers I've worked with so far this year have put offers on properties that had multiple other offers. All buyers are looking for value and they will jump on a (your) property if it's priced correctly.
A few questions to ask yourself...
1) How many showings have you had?
2) What's the feedback you've been getting from buyers and buyer's agents?
3) Have you seen the comps and objectively analyzed them to determine market value?
4) Does your property have a prominent internet marketing presence?
It is taking homes around 100 days on average to sell currently in Ashburn. This will vary depending on the price range and neighborhood. I am going to spare you the details of telling you that it must be priced well, marketed well, and show well. Assuming that it meets these criteria and does not sell in the next few months I would possibly consider re-listing it with another agent. Every agent has lost listings, even the best of us, and some times it just takes a different angle.
Here are a couple articles I thought may help you:
I've learned to be VERY PROACTIVE and ask realtors specifically How long are YOUR listings on the market? How many houses have you sold in the last 6 months, last 12 months & get a specific breakdown. What is the comparison on the listed price to the sale price on EACH of their sales....AND how long have they been selling real estate....Statistics can be manipulated but hopefully when they put it in WRITING what they've done they'll be honest. I've learned the hard way, too, that just pay for a home inspection B4 a buyer submits an offer (vs letting THEM pay for it themselves) & get any problem areas fixed b4 there's a pending sale. Also you might check with your state's Realtor Licensing Board & ask if you can get specific stats re: specific agents.....good luck selling.