U-Haul estimated cost, how much are we looking at?

Hi, My boyfriend and I are planning to move from Syracuse, NY to Atlanta, GA and we want to know an estimated cost to be looking at. We are going to rent a cargo trailer, the biggest one which I think ranges from $25-$30, we'll probably need the trailer for 4 days and to make it cheaper a family member is coming to pick us up coming from Georgia, rent the trailer from there, bring here and back. Will we need to pay a deposit? if so how much? and For the trailer, do we have to pay a set price or pay for each day we need it? Also I heard if you use a major credit/debit card you don't have to pay a deposit? Thank you!