Chris
You need to have a very clear idea of the “mission” you wish you’re a/c to perform before you can have a meaningful discussion on costs. If you are looking to tour Europe two up then a modern “LAA VLA” is one option;
Typical cost £50k (low hour less than 5 years old)
Parking (depends on location)
Insurance 1000pa
Maintenance £500pa
Fuel for 200h at 18.5lph of mogas £4440
Another option would be a traditional LAA type like a Jodel, still capable of touring Europe, but not as fast and a much older airframe;
Typical cost £15k
Hangarage (depends on location)
Insurance £600pa
Maintenance £1000pa
Fuel 200h at 21lph of mogas £5000
Or if you are happy with a single seater;
Typical cost £6k
Hangarage (depends on location)
Insurance £300
Maintenance £500
Fuel 200h at 12lph of mogas £2900
You will notice that all the costings have fuel as the largest cost!
Rod1