no, you don't have this part totally correct. If you buy one CNC, it will cost you $150 and you get $250 credit to use on the next cruise. If you buy two or more at once, it will cost you $125 each, and you get $250 to use on another cruise. So you're not really get $100 (or $125) OBC to use. It's the discount for the CNC. It's best not to even think about the OBC. It's there to confuse people and trick them into thinking they need to go buy something with it