How much should I pay for a 2017 with 138,000 miles? No recaro’s.

What’s up guys! I’m looking to purchase a fiST and was wondering how much one should pay for a 2017 with 138,000 miles that’s fair. This would of course take in to account that the car was unmodified and well maintained with service records. This car has had 1 owner. Also, I think it’s important to mention that I’ve never actually drove stick, so is it a bad idea to by one with such high mileage, or a good idea because I would likely not be the smoothest right way at driving a manual car, perhaps call it a beater? Things I should look out for? Thanks!