The two most important factors are price and condition in selling a home. The first step is to price it properly. Then, go through the house to see if there are any cosmetic defects that can be repaired.
A third factor is exposure. It is also important that the home gets the exposure it deserves through open houses, broker open houses, advertising, good signage and listing on the local multiple listing service, as well as the internet.
Choose the real estate REALTOR that you believe will get the job done, not the one that quotes you the highest price – sometimes just to buy your listing.