Some chips here and there are common…something to do with the type of paint the Aerodynes get, I believe.
Sonically speaking, if it sounds anything like my export model 'Dyne, it should sound quite nice, especially when paired with the right kind of strings. That "right kind of strings" is, of course, completely dependent on the sound you're trying to achieve. And like chienmort, I usually go 100% on the P-pickup and add in 50% or more on the J-pup…deep and full with enough "grittiness" to round out the sound.
Overall, if it is in good working order, $525 is a steal, especially considering the cost of a new non-export model AND the shipping costs to bring it across the Pacific.
Oh, and by the way, LET ME KNOW IF YOU DON'T BUY IT!!!