Well, actually nowadays, 3d glasses are very expensive and they are very popular with many people, especially young people. And first, you should know that the 3D effect relies on your two eyes each seeing a slightly different image, in which your brain then combines into a three dimensional picture. Because of their special functions, they are more attractive than the regular glasses. So when you have worn a pair of 3d glasses while watching 3d movie, it will make you feel that you are just in the real phenomenon. Anyway, it can be amazing. And because of this special function, 3d glasses should be made with special material too. And that is why they are so expensive. But in my opinion, you can just buy ones and have a try.