The car is over 10 years old, so you can expect some repairs. Parts and labor are both higher than “normal” cars, about 20 to 30% on average per repair.
Not too bad in snow, but you’ll need winter tires. The car is low to the ground and won’t do well in deep unplowed snow.
A Porsche specialist is a good idea for repairs. A good shop can handle oil changes and routine maintenance.
IF the car really needs a new clutch that is a red flag. Either the owner for 30K miles is a novice driver and very tough on the clutch. Or, the owner is an aggressive and hard driver and was tough on the clutch. A clutch should not be toast in 30K miles. Was the car raced? or taken to “track days” at the race track?
Get a mechanic’s inspection before buying the car.