Dear [school name] Admissions,
Thank you for accepting me to [school name] last [month you were accepted]. I am truly humbled by the opportunity to advance medicine at [school name], and I can honestly say that since my interview day, [school name] has thoroughly impressed me for its collegial environment, curriculum which matches my educational goals, and location in [location].
I understand that many scholarships have already been disbursed, but I wanted to provide a qualifier that I hope the scholarship committee may consider. I have received a scholarship from [other school name] which makes my four-year tuition at [school name] nearly [monetary sum] more than it would be at [other school name]. I really would like to attend [school name] for my medical education, but cost of attendance is the chief and overriding concern for me, which makes it extremely difficult for me to turn down this other offer. I humbly recognize that I am in no way entitled to a scholarship, but any assistance that the scholarship committee might choose to provide would make a decision to matriculate at [school name] much easier.
Sincerely,
[your name]
AMCAS ID: [your AMCAS ID]