The thing is those people won't be over paying for it, because the cost of 3D doesn't add that much of a rise on the TV, it's just most of the TV's currently being sold as 3D are quite big sizes and they are high end TV's with an added feature of being 3D. I don't think 3D will die out, and infact believe it will grow in the years to come, especially in the gaming side of things. build quaility and 3D picture quaility will depend on brand and models, each brand also has it's own build and ways of glasses. I so much don't mind glasses being a factor for the quaility and experience you can gain from it, via films, programs or gaming.
Content is just going to grow plus most of these TV's will be able to convert 2D to 3D not as good as orginal 3D but it adds to the experience and gives you the choice. Prices will clearly drop over time as they do with any product, but I don't think they're overpriced at the moment either. People will pay large amounts of money on lots of different things to their tastes, some things are stuff that people buy daily that they don't really need or in some cases are quite bad for you but they still pay money for it, that over a year equals lots of money for things that have disapeared and can no longer be used, you just have to keep buying them daily. I'd prefer pay one sum for something that is always there and gives me entertainment and enjoyment also something that is the future.
Yanto