I have developed programs on writing effective admissions and scholarship essays for major private education companies, and I run workshops on writing effective essay responses. I received over $300,000 in private scholarships for my own graduate studies.
I would charge you $750 to prepare your first admissions letter as well as helping you prepare your letters of recommendation and your first set of admissions essays. This would also include re-working your admissions letter for up to five different universities.
For unique admissions essays in addition to the first set, I would charge an additional $.25 per word, a minimum of $50 per application.