If you had a lobster roll in New England you would realize that 20$ is reasonable. The lobster rolls out the pretty much use a whole lobster in one of those rolls. No shortcuts. I prefer butter over mayo for lobster but the rolls are the real deal
I live in Maine.
I’ve had lobster rolls made from frozen lobster for ten dollars or less.
But to be honest, the ones made with fresh lobster meat are MUCH, much better!