You can not use the cost of the water heater as a guide to the cost of the installation! Every job is different. With new technology today makes installation two to three times more difficult than in 1960's.
dramatic play - a dramatic work intended for performance by actors on a stage; he wrote several plays but only one was produced on Broadway. drama, play. drama - the literary genre of works intended for the theater. stage direction - an instruction written as part of the script of a play. dramatic composition, dramatic work - a play for performance on the stage or television or in a movie etc.
In this example, it is ironic that water is everywhere but none of it can be drunk (as it is seawater). Dramatic irony is the inconsistency between a situation developed in a play/drama and the accompanying words or actions that is understood by the audience but not by the characters in the play..