Be sure to tell your LDS that you couldnt care less how much it costs to keep a 300,000 thousand dollar compressor running, or the cost of changing filters or the up front costs or storing the O2 needed to make the Nitrox, or the rental tanks or the 30,000 dollar initial buy on spare parts to service customer and rental dive equipment. Oh and make sure that that you tell them that you dont want to pay to keep their staff on hand or the rent or insurance to keep their doors open or the pool clean.
When a student walks through the front door wanting an OW dive course you should think about what he or she is getting for the 250 or what ever the going rate is today. The instructor pays several hundred a year into insurance, or maybe the shop pays it for him, remember that the gear used in training has a value of a couple of thousand maybe, BC, tanks, an assortment of weights and belts, regulators that work properly even though they are regularly abused by students that dont yet know better. Remember the cost of getting to the dive site and the time involved in the teaching of the class and the time to make the dives with students, both pool and open water. To make a profit on dive classes it would be logical that the classes cost thousands, not hundreds, make sure you tell the LDS that this is not your problem and that you dont want to pay for any of this
Think about how much it is going to cost to have you own compressor and all the associated filters and storage banks and how much it is going to cost to trailer all this to the dive sites because when you kill off the LDS that is what you are going to have to do.
Just sayin