I do triathlon because I enjoy it and it keeps me fit (/ helps me get fitter).
I do it because it is cheaper and more interesting than being in a gym.
Why should it be uber expensive?? A bike and swimming costume and a pair of trainers, to my mind, shouldn't be. Which is partly why I chose to do it. Unless you're going for serious training, and record breaking and the like.
I've done a few triathlons over the last couple of years, and am thinking about doing an OW one so will need to get a wetsuit. Problem is that I'm approx size 16, short and skint!! I've just been looking on eBay and there's a few possibles, but I don't know if it has to be a long one, or if a shortie will do. Or if it needs to be a tri specific one (which quadruples the price!).
I don't know if I'm going to enjoy OW swimming so dont want to spend lots, and half looked at hiring, but that seems expensive too!!