Keep in mind that not all Rotorways are created equal. Their have been a lot of changes since they came out in the 60's. I assume from your "look very nice" statement that we can ignore the Scorpion and go directly to the Exec. That came out in 1980. In that almost 40 years their have been 2 different bodies, 3 rotor systems, 4 or 5 secondary changes, half a dozen engines, and as many new owners. Not to mention the belt drive tail rotor has been changed to a shaft. And don't forget that they are all home built. Not all builders have the same attention to detail.
If you're looking at a cheap Rotorway you need to know what you're looking at. To lump them all into one basket and call them cheap is like throwing Chevettes and Corvettes into one basket and calling them all Chevys.