Bad time to sell. Depending on elevation, type of septic system required and veiw, the price could vary greatly. Most large lots like yours were made so due to large marshes and/or to overcome poor soil conditions that required extensive septic drainage fields. If either is the case, the added cost to a dock or expensive septic system could greatly reduce the value of the lot.
Local realators are notorious for inflating current values to get your listing so it's better to check the Pamlic Co. GIS site to get a realistic idea of value. Asking price on adds can also be misleading, most of the stuff you'll see has been on the market for years and the properties that do sell are sold at far less than asking price.