As a former applicant and current med student at Tufts, I would advise you to attend the interview unless you have an acceptance at a school you would definitely rather attend (a top 25 acceptance or state school acceptance, IMHO, is good reason to cancel your Tufts interview). I was invited on 7 interviews and attended all 7, which turned out to be a good idea because my first acceptance was off the waitlist of the LAST school to interview me. You just never know how things might work. As for financial aid, most schools are pretty bad about offering scholarships and financial aid, you just have to take out loans. Tufts is no different from most other private schools (although it is a bit more expensive than many other private schools) in this regard. Another thing to consider is that the reputation and location of Tufts are superior to a good number of lower-ranked private schools, and we have Honors/Pass/Fail grading, which provides a relatively low-stress environment. I can't speak for others, but if I had cancelled my Tufts interview and ended up at, say, NYMC or MCP-Hahnemann instead (this is theoretical), I would have regretted it. Hope this helps; please feel free to ask if you have any questions about Tufts. I am an M'05 there (first year). good luck!