The points mentioned in your old safari thread also apply here.
+ Skoda are known for bad and delay type ASS
. You need to have good contacts with a knowledge bearing and sincere mechanic.
+ octavia is known for poor GC , You need to get used to low GC driving Skills, bit painful for erstwhile sierra driver.
6000 km /year is hard to believe , is it petrol?
The price depends on fuel type, number of previos owners , condition of the car, repair works expected , life left in tyres, batteries insurance.