ask why it needs a front tranny seal?
usually when they go out, the blow oil all over the bilge and u loose forward gear! borg warner velvets like in that boat are easy to find but u can pay a pretty penny for a good one. a seal is only about 5bucks FYI. Ive replaced them in nautiques, it requires pulling either the motor or the trans. easy to change once out and u can inspect the front pump while its out. sounds like a boat thats been abused though. id offer 3500. - 4grand. always always always offer less then asking price worst they can say is no.