Whizbang Dustyboots
Gnometown Hero
Because the "double its costs" thing is a benchmark, not a law of physics.if it breaks even in BO alone, then I am not sure why the rest matters
And the Princess Bride had an extremely extended pre-release period where they did more than the usual amount of testing and tossed out multiple whole marketing campaigns. The studio spent much more than usual marketing budget on what should have been a mid-budget movie.