It is always advisable to speak with an attorney to represent you in any business transaction. However, if the sale price of the business, as a practical matter,, is less than $2,500.00 then hiring an attorney or consulting with an attorney may not be practical.
A business that is sold for more than $2,500.00 should have some kind of a review by an attorney. An attorney can readily, and in most cases, inexpensible protect you from future liability as a result of the sale. Such things to avaid are subjecting yourself to liability as a result of misrepresentations or other claims a disgruntled buyer may have if the business he or she bought were to tank.