your price prediction by end of 2014?
It is very hard to predict bitcoin 3 months ahead because a lot of things can happend that may change my perspective in that time. Things we don't know yet.
I'd say anything between $500-$900 if the momentum stays and nothing particularly bad happends.
I think $500-$600 is reasonable, I don't think that anything higher is sustainable at the moment. There is far too much downward resistance every time we start building any momentum right now...