Tdale

I hit a rock last summer and messed up my prop . Replaced that and Didint have any issues the rest of the summer . No vibrations, etc. Brought in for service after de winterizing and they are telling me the shaft is slightly bent and rudder is extremely bent and telling me I need to replace otherwise I will wreck transmission. Just curious if I need to replace since it seemed to be fine last summer? And if I do need to replace what is a fair price . Thanks