I have never cruised before so probably i'm not the one to respond but i just had a thought. Did the price quoted to you include port charges and taxes?? if not that is probably why the charge is for more than you were quoted. Alot of times the price quoted won't include those charges but they will have to be added in the total bill. Also did they add the extra (optional) insurance charges?? That too may be why the price is different.