Dear (Recipient’s name),
Subject: Letter of Agreement – (State specific topic of letter)
Thank you for choosing our publication house (state name; may mention any other company) in order to delegate the task of editing your autobiography (name of book or any other product).
This task would include the reading of the manuscript, drafting, editing spelling and grammatical errors, suggesting changes and so on, as per the requirement of the job.
Around (state time required) working hours would go into the completion of this task and an hourly fee of (state fee) would be charged, on the basis of which the total fee would be (state total fee).
Any additional time required for the completion of the task would be subject to extra fees at (state extra fee) per hour.
The payments should be made within (state period) of the receipt of invoice.
If you agree to the terms and conditions, please sign the letter.
Accepted and agreed