Next you will mention the date. The next stage is the body paragraphs. In the body paragraph you are supposed to state why do you intend to buy the business? What synergies can be created from takeover and how can you grow the business in future? What is the price range you are willing to pay for the business? Who are the people who intend to buy the business? These are some of the basics things you will be required to mention. letters of intent can be altered according to the user's requirements.
If what you want is a quotation or offer, then sending a letter of intent makes you look ignorant while requesting a quotation will generally at least make you look like you know what it is that you want. And what you want, after all, is a price quote. Hence you want to request a price quote, via a request for quotation.