Purchase of a Business » used between the Seller of business and a potential Buyer of a business. Eventually, you would use a Business Purchase Agreement to complete the deal. Purchase of Real Estate » used between the Seller of real property and a potential Buyer of the real property. You would use a Real Estate Purchase Agreement to complete the deal. Purchase of General Property » used between the Seller of personal property, such as a car or jewelry, and a potential Buyer of the personal property. You would use a Personal Property Purchase Agreement to complete the deal. Other Transaction » used between parties to document a potential transaction, such as providing goods or services over a given period of time.
While most are not legally binding, there may still be consequences for not complying with the agreed upon portions of the letter. A Letter of Intent is often seen like purchase or crowd-sourced orders, so they are often used to help secure funding or prove the value of the business. If the other party drops out or doesn't honor "in good faith" the letter, actual financial damage may be incurred to the company. In court, most often the judge will make decisions based on what implied intent is expressed in the letter. Sometimes there can be recourse if the parties do not follow through towards an actual legal agreement.