my expenses last year (and I saved lots not traveling and applying to few schools) I applied to 8 schools i think and interviewed at 4. You just have to eat the cost yourself (except for deposits).
DAT scores sent: $80
AADSAS App sent: $400
Secondary apps: $380
Interview suit: $180
Interview (w/ traveling) to Columbia: $4
Interview (w/traveling) to ADSOH: $250
Interview (w/ traveling) to NYU: $254
Interview (w/ traveling) to Stony Brook: $24
Deposit to CU (Jan.) $500
Deposit to CU (May) $1,000
It is very expensive overall, but you just have to shell out the money!!