Here is what will probably happen. I had a couple that was tight on funds. I loaned/ greatly reduced rental fees so they could dive more. At the end of the first season I calculate I had given them about $650. 00 in free rentals. The wife decided to buy a bc online because it was $150.00 cheaper online. Consider that even if she had paid my price, she still would have been $500.00 ahead of the game. Now they have more gear but they still rent tanks, now pay full price for tank rentals and get charged on a daily basis, before they could pick the tanks up mid week because the husband was in the area and bring them back next week. Whats good for the goose is good for the gander. You were happy to accept free classes and would show up with gear you purchsed online, sorry bad form.