ams511:
It is a numbers game. They train 10 students and maybe only 1-2 buy gear in excess of what is required for the course. Most new divers aren't diving a year or two afterwards so they don't see you as a long-term customer. In all probablity you won't be. This is the best time to hard sell you gear purchases, you are captive and do not know any better. Once you are certified and want to buy gear you will probably buy online anyway.
At most other LDS, 10 students might be average for a class session, however this is an LDS that is also used to teach scuba for course credit through a university. There are at least 7 different Basic labs during the week with around 8-12 people in most, not including the instructor or AI. I believe that there is around 16 people in my lab, only because there's the instructor, and two AI in training, myself and a young woman. The classrooms are held less frequently but as a larger group. There are also 2 Advanced/Master classes this semester, which requires the purchase of more gear, pretty much everything short of a bc, regs, and tanks.
Point being, there are plenty of opportunities for the LDS to make money off of the many "newbie" students that may buy gear and then let it sit in a closet, but in addition to myself, a few of my AI classmates are beginning to tire of hearing that just because we find a deal either online or at another LDS, that we're gonna get a raw deal. My instructor's warning story about buying online is that he had a "buddy" that bought a set of regs off of ebay, and when he received it, it was a box with a bunch of parts (he didn't clarify if everything was taken apart, or if it was simply ordered and not put together). I could say that it is likely the fault of the buyer for not getting enough information to make an intelligent decision about the purchase, but I don't want to cross him by telling him that.
While many people do rush into the purchase of gear, I have spent untold hours trying to find very esoteric specs (flow rates at depth, etc.) that I can use to try to differentiate one set of regs from another rather than simply pick one because something looks cool or is made from titanium or carbon fiber.
If anything I appreciate you motivating me write this, because it's allowed to me reevaluate my shopping experience at the LDS that I'm training at.