Juliette loves to eat ice cream and spends a fortune each week buying it. In an effort to save money, she is considering making her own ice cream at home. The cost of an ice cream maker is $135 and the cost of ingredients is $6 for each 1.5 L batch. The cost of the same 1.5 L is $12 at the store. If she eats three litres of ice cream per month, will she save money by making her favourite treat at home? Assume the ice cream maker has a one-year warranty and breaks immediately after.