I don't work at a dive shop, or do anything related to the dive industry (well, except for spending my money, but no one has complained). I did a lot of research before purchasing my gear. Just got my second reg and bc. I am in the camp that would not use the dive shops stuff acting as if I was going to purchase from them and then get it online. Perhaps you did not do this, I hope not. I bought from a local dive shop where I was able to try out the gear prior to purchase. The prices were quite competitive with internet prices. I simply would be upfront with the lds and tell them what I was doing. If they wanted rental (as I wojuld expect) pay it. If they don't want to play ball, go elsewhere, but I would not resort to deception by either lying or misleading. That would stink. If you are a good customer they will likely bend over to help you.