The values on Bullseye have been $5-10, $1-$6, and $2-$12. I'd always assumed that the most recent change had occurred closer to 1990, but I really don't know; can anyone clarify that?
Also, the green arrow on the board changed at some point...maybe when the most recent value change happened, since the numbers were altered, as well. You can see the differences at Brad's site.