As with any purchase, you have to do your research. You did get screwd!!!However, most dive shops (in Canada anyway) will give a price for the OW course and than a price for the Open water dives. Reason being is that some people rather do the open water dives down south (but people that are new to the sport don't really know the details of a full course, unless they inquire. Dive shops/instructors have responsibility to educate new to be divers about, not only the costs involved in the OW course but also the commitment needed to continue diving. I was lucky, however, for my course; I set up a course for me and 15 of my friends and we were able to get the ENTIRE course (no rentals or purchases required, include the open water dives) for 300$ (and that's canadian $$$)...not bad. Cheers