the almost cheapest and most reliable way? taxi from the airport to the san jose didiron station and then take a highway 17 bus to santa cruz
Santa Cruz Metro - Amtrak Highway 17 Express
the taxi comes out to about 15ish
metro is 4 dollars, exact change only.
cheapest way: get on a airport 10, get off at the caltrain stop, take the caltrain to the station, then get on a 17 (its about 6 dollars and super tedious)
the shuttle if i remember is about 40 from san jose.
definitely talk to the university, usually they offer something (ie. spring to summer session break is about 20 dollars a day though I dont know if they will do the same for moving in early, usually its ok.. you will probably have to pay a fee)