As a former Pitts and warbird owner hopefully i can help a bit........ The price for a Pitts varies hugely depending on condition, who built it, who maintained it, whether it has 4 ailerons or 2 and the engine type and condition. I suggest you talk to an expert because there are some big pitfalls. I know you want to avoid talking about hangarage, insurance etc, but its worth a some serious research, the difference between the cheapest and most expensive can be 200%+. if you are military or ex-military there maybe some hangarage bargains to be had. Insurance is fairly standard with some good companies advertising in Pilot or Flight magazines. i know zilch about ultralights, but the Pitts was a pleasant challenge to fly: fast approach but stunning brakes! one last point, and its only a personal view, avoid Russian stuff unless it is the top-end models such as the Su29 and above.