Two for one makes it more affordable, but still not necessarily a good deal. If you are happy with the deal, that's what counts. Personally, I'd skip the boat dives in Bonaire if they tossed them in for free. The shore dives are that good and you actually lose dive time by going out on the boat. Even if I wasn't interested in diving 5 or 6 times per day, I'd make the shore dives according to my schedule and have that much more time available for what ever it is people do in Bonaire when they aren't diving.