Partners in an old T-6/SNJ. It has averaged a total of $18-21K a year based on a 100hr yr. This doesn't include hangar or initial purchase investment. Not exactly cheap, but it's standard category (you can charge for rides), aerobatic, and makes those cool radial sounds. We do a few mil airshows a year and they usually kick in fuel, oil, smoke oil which helps out a bit. Partnerships are great if you have some buds you trust that might want to go in on a bird with ya.