I have one I got used for less money but it was a bit beat up and came with no case. So, I think that is a reasonable price though no harm in trying to do a little better. They are very nice basses, even when beat up! In many cases the high end Squier passive basses are so good that it is hard to justify purchasing a passive MIM for more money. But I also have the experience that none of the Squier fretless basses I have tried measure up to the MIM fretless so I think that in this case the MIM passive fretless is the one to buy. The used price just makes it even better. Oh, I would not worry about the stringing. The present owner clearly does know how to string a bass properly, I'm guessing that crossover after the string tree is just his "trademark" style. It does no harm, just makes the tuners out of order when you go to tune up, and it is easily reversed.
Ken