I am working with a widow who's husband died from COVID. She is in the Texas Panhandle and has a Bensen, I think an Air Command and a Tango 2 that needs repair he rolled while taxiing.
There are a lot of parts that come with the two single place machines, he purchased them for $8k some time ago.
The Tango needs the following: the frame straightened, rotor blades, rotor head, tail, and and a few other items. It would cost $10-15k to repair. It is one of the first Tangos built and is powered by a 120 hp carbureted Yamaha so pilot and passenger weight is limited when compared to the fuel injected 135 hp models.
Personally, I would use the Carbureted engine on the Air Command and purchase a new 135 hp crate engine from Arctic Cat.
All of it can be had for around $20k or less and less than $8k without the Tango. She is working on getting me some pictures. I plan to go look at everything this summer.