Don't worry about that. The Vectrex has one of the most active homebrew subcultures in the entire world. Almost more games have been made for the Vectrex since its departure than before it, I think. Wikipedia says someone even ported Logo to it just last year. And you could always an emulator first, though those aren't perfect.
Ah, Vectrex ... the magical unattainable jewel of my youth. Years later some druggie I roomed with inexplicably had one, and I got to fulfill years of video-game blue balls. It was literally one of a kind.