I think I spent at least $3,000 on the total costs.... you have to think about all the little things that nickle and dime you to death-- paying for the adsaas, secondary costs, thank you cards, postage costs, picture costs, transcript fee costs. I'm from Seattle, so UW was free! But then for example my interview at UConn -- the ticket was at least 300, then 2 hotel nights (at least 100 bucks a pop), food, and the whopping $160 taxi rides from the airport to the school then back! Unbeleivable! This was very expensive. I applied initially to 14 schools, but realized this was too much, so didn't send back very many secondaries. I had 6 interview offers in Sept-Oct and was offered spots at each in December so I just withdrew the rest of my apps. Good luck w/ the expensive process!