if you see a listing contact the brokerage via telephone and look them up. The office must have a physical address and telephone # if things are looking suspicious.
To get the most accurate information it is best to work directly with a Realtor. What questions do you have?
Here are a few other places near that location for sale (http://mrislistings.mris.com/DE.asp?k=3041248XKJ4T&p=DE- ). We can check them out this weekend. Just call me at (202) 670-6677.
Talk to you soon,
A Realtor would NEVER ask you to wire money. If you see a posting; try to google the address - you may then find the LEGITIMATE Realtor and ask if the home is for sale or rent and how much it is.