I fully agree that a buyer should try a product before bying. However, this is not really the case for most of us that don't regularly attend pinball expos and such. I guess some people are obviously willing to buy something based on video and forum reviews which often is the case for other products as well. It's not like you are marrying the game so if you don't like it just sell it (which by the way is not a proper way to handle a wife even if she fails to live up to standards, expectations and other relevant criteria). Do what your gut feeling tells you and if you have the money to spare - go for it.
Finally just wanted to say that I hope everybody on this forum understands what a HUGE undertaking Kevin and the others at Skit-B has taken on themselves in this project. I have the outmost respect and confidence in that they will fulfill their ambitions and commitments.