A Letter of Intent Sample Can Be a Non_Binding Contract. A letter of intent can be considered as a non_binding contract between two parties and generally contains the information that they have agreed upon and can in fact be a precursor to a contract. This is a very commonly used form letter and in essence states that a person or a company intends to take part in a particular action or activity. If you have never written one you may want to look online for a letter of intent sample to learn how to write one that is effective and will get the results you need.
Especially when, in effect, what is being asked of them is to provide the LOI upfront to a little_known Internet_generated seller about whom they lack any familiarity with or whose bona fides as sellers they know next to nothing about _ other than, perhaps, that they (the buyers) had had some initial communication with the "seller" via an Internet contact.