We don't live too far away (Selkirk in Haldimand County) and have friends in Waterford. The boys and I have been buying and flipping boats here as a hobby for 5 years now. That's at the very top of the price range for a 90' glass boat of that size, especially for that era Bayliner. But Brain makes a fantastic point about Bayliners being entry level boats. I looked at a 89' with the L drive Force, it was only 11K brand new. Most of those new owners knew nothing abought caring for and maintaining a boat, I know I didn't have a clue and probably would have destroyed it. They all can look great on the outside and are generally rotten below it's skin, it's 28 years old. I would look very close at it. In fact if the owner is serious have him take it to Proctor's Marine on hwy 3 in Simcoe and have John or 1 of his guys look at it, they will tell you exactly what is wrong and what it's worth for $100.00. I would be more than happy to split it with him, if he declines run away, fast.
edit: in fact if you can bring it to us we will do the same thing for you if Proctors is busy. West of Dunnville on Rainham Rd. reg.rd.#3. Take your time shopping, I bet there isn't a line up of people interested at that price.