Selling anyting is all about the number of people that are aware of the opportunity(visibility) and its desirability. If the home has appeal and an efficient marketing plan is put in place, the chance of selling your property are greatly increased.
Going the route of placing your home on the local MLS using discounted services is only the first step of what is usually a much more involved process. The choice is yours, but banking on only the visibility generated from the MLS could be a disappointing experience.
Using the services of a real estate professional may appear to cost more for the seller but it's a fact the homes sold via a RE professional: sell faster, sell for more money, and make the process an easier experience for the seller.
Before making your final decision, it may be beneficial to speak with a couple good local agents to find out what they can do for you.
The choice is yours!