I reviewed your profile and it appears that your are serious about two things:
Getting your home sold, and selecting the right Realtor. Am I right?
The marketing plan is only as good as the Realtor that implements it. A great marketing plan, poorly implemented, will not be effective. A poor marketing plan, carried out by an excellent Realtor, won't do it either.
I think this is what you want to know:
In a buyer's market, there are more homes than buyers. Every area has an Absorption Rate. Let's say your home is a three bedroom, two bath, 1600 s/f on a 6000 s./f lot. There are 300 other homes on the market, just like yours (tract housing, in this example). Last month 50 homes sold.
The Absorprtion Rate is six months (300 divided by 50). If you have limited time (you want to sell in under market time, then a different marketing plan is needed. If you want to sell in market time, then another strategy is needed. When there are a lot of homes on the market, it takes a while for the buyer's agents to sift through the inventory, so your Realtor's job is to make your home stand out. Know your competition.
The three factors that affect the sale of your home are primarily price, condition, and time.
Homes that sell first offer the best value. So that means a low price, great condition, both factors that offer buyers value. The best values for buyers always sell first, in every market.
The rule of thumb is that the longer a homes sits on the market , the less the seller will net. Homes that sell in the first 30 days will generally sell for closest to list price.
You need a Realtor that can explain the market to you in terms you can understand. One that will ask you some tough questions, helping you get to the truth about what you want to accompish in the sale of your home.
A properly marketed home will sell in under market time. The single biggest factor is price, so I would not select the Realtor who quotes me the highest price. (That is what we call "buying a listing"). Select the Realtor that asks tough questions, is realistic, and has a written marketing plan/calendar and demonstrates to you that they can sell your home.