I know a couple that has 2 mint ones from 1999. They really are not that bad ass. They were created for the gap in the track engine size regulations when the duc's and other 750/900's were allowed to run with 600's a long time back. Yammy wanted a 750 that was still legal to run hoping that it would whip ass out there... it didnt happen.
They were plauged with problems and just didnt really get marketed for street sales. Even an 03 r6 will match it nowdays. They look cool and are rare i agree.