Maybe, maybe not.
Location, (A house East of the canal is worth more than an identical one West of the canal ) condition and amenities, and comparable sales are what agents use when listing a home or presenting an offer. Maybe your house is worth more. As stated below by the other agents, we cannot advise you without seeing your home.
More importantly is how strong is the buyer? Do they have the money to close the deal? Did you present them with a sellers disclosure? Will you know how to keep your deal together till closing? These only some of the things an agent will handle for you to make sure that your buyer is for real.
The problem with buyers going to FSBO's is they know that a FSBO will not check things out that an agent will. They are hoping you do not know the value of your home. So, it could be a great offer. Get educated before you sell the huge investment you have in your home.