For me, the best place to eat lobster is at Jambel's. They serve it however you like it. I like it unjerked.
I think the cheapest place used to be The Reef on Middle Street. It seemed that most every place that I checked this year was $35 BZ. Not too shabby. I ate lobster twice a week and once for breakfast . . .but that last was a mistake, I shall not repeat.
I'm not going back until late February, so I feel your pain. At least you will get one lobster meal.