I'm looking at buying an airplane within the next 1-2 years and it seems that the hardest part to figure out is real cost of ownership. I've read the two articles on Plane and Pilot about cost of ownership for less than $500 and $1000 respectively. I don't plan on using the airplane for hire and primarily would use it to access hunting and fishing areas here in Alaska. If the weather is so bad I wouldn't fly an ultralight, then I probably won't fly an airplane that might only weigh a couple hundred pounds more. Glancing into the cockpit of a PA-12 yesterday didn't reveal a lot more cargo space than the LSA I've been eyeing and the PA-12 sells for twice as much VERY used.
Seems to me that owning an ultralight/LSA versus a small certificated airplane of the size would be significantly less costly. Less government intrusion into what I can do with my airplane, lower or no TTAF, lower cost of repairs, lower cost of parts....... See where I'm going with this?
I would bet that over a 5-10 year span, an Ultralight/LSA of equal abilities and initial cost would end up being significantly less cost to own.
EDIT: I should mention that I'm looking to spend less than $35,000 for the aircraft. This doesn't mean spend $35K than another $15K getting it airworthy and legal either. I'm talking safe and ready to fly into the backcountry. There are plenty of airplanes for less that are only going to end up costing more in the long run.
What's your take? I'm all ears.

