Hi and welcome to the fold.
Unless that one is really cheap, the mileage is a bit high. Not that it's a major concern, because if well looked-after, it will do another 150,000 without much effort. The reason I say this, is there are always ST13s coming on the market with a lot less mileage at reasonable prices. What is your budget? You might have to travel interstate, but there are members everywhere who will do an inspection and test ride for you.