Honestly I think the price you have offered is not fair, be respectful when approaching a deal, do not lowball, after all it was the first owners pride and joy and he paid above 5 mil for it, doesnt mean you have to buy it at a loss,
But don't low ball, try to make a quick buck and fall into the current perishing society in this country, if it isn't in your price bracket, move on
If you can't handle the repairs, go find a better car
Overall it's not a wise decision to touch an old hybrid car. It's a great car but the hybrid system is aging