I don't think these sold in any quantity. Adverts seemed to be there one month gone the next. I may even have that wrong and perhaps they didn't make to advert but maybe a gun test and no release? Memory fails me on that.
Another thing about them (again if I recall right) was that there may have been an issue with their power potential topping the limit a bit too easy.
I know a good shooting buddy progressed through an Innova, onto an Ace and had his heart set on one but it never came off.
I do think someone on here also has one.
Dave