Discover whether an asset or stock sale is best for buying or selling a Connecticut business with Aeton Law Partners. An asset purchase agreement is a legal document that outlines the terms and conditions of buying or selling assets in a business transaction.4. Terms of the Agreement. A business sale agreement is a legal document that describes and records the price and other details when a business owner sells the business. Browse 41 Middlesex County, NJ Restaurants and Food Businesses available for sale on BizBuySell.