The information you received so far is good. There are many variables that are property specific, so it's hard to give you a percentage without asking the necessary questions. When you're ready to list your property, your agent will prepare a Seller's Net Sheet, so you go in with a good idea. Not all agents prepare this the same, but if done correctly, the final number should be very close to your final closing costs.
Cory La Scala, REALTOR
Lic # 01443391