？？？
You've got some other reason, don't you? Come on, I've hit the nail on the head, haven't I?
Literal
Different [genitive-の] reason [subject-が] exist [confirmatory-ね]? How? bull's-eye [conjectural-でしょう]?
A rapid-fire trio of casual questions. The strategy is probing: the speaker makes a guess, invites reaction, then asserts they've guessed correctly. 図星 (ずぼし) literally means 'bull's-eye' and is the idiomatic expression for 'hitting the nail on the head,' 'guessing someone's secret correctly' — it carries a satisfied, almost taunting note. The sentence-final ね in ありますね is a tag-question particle seeking confirmation, and でしょう? is a rhetorical question seeking agreement — 'right?' 'isn't it?' Together they triangulate on the listener: 'you have another reason, don't you / hmm? / bull's-eye, right?'