The term "non-refundable", which is attached to all mentions of the fees paid when accepting, means that you won't get that money back.
just an fyi- it is normal to be a bit scared and apprehensive about moving to a strange area and doing things outside of one's normal routine. However, 97% of the others on the program are in the same boat. Unless there is something significantly preventing you from being able to go, stick with it.