Paid € 1,400 three or four years ago and every now and then get a mail from Antonio. There is always a risk when you pay ahead. On the other side some projects simply need pre-funding to get them going anyway. In the mean time Antonio is just making the game better. And recent history teaches us that getting the program right takes time. At the end of this year I could be the owner of two machines which will not be listed in my games list simply because they are not on the list (the other being The Matrix). To get an idea of programming. Dennis van de Pas, who programmed P-Roc for The Matrix spent five hundred hours to get it right!
Also paid 500 US$ like two years ago to someone else and had to wait. That ended up with owning a repro playfield for my Stern Stargazer. It almost looks too beautiful to put it in the game