I’m going to have to second that, buy it! It’s worth the price tag IMHO, if for no other reason than the pieces you get.
Thus far I only see three things I don’t like about it; bow is unstable (put in some supports then it’s great), the modular deck doesn’t really have much to hold on to, and finally the cabin isn’t really original in its design (looks like Brickbeard’s ship). I’d add that the Flagship is a good base to start an even better ship, as I mentioned it does need a few add-ons, I put some swivel guns on the poop deck.
Buy it, dress it up with your own designs and play, that’s all I can tell you.