Something is only worth how much you will use it. If you will use your keyboard every day from now until the cataracts and arthritis gets you then you'll probably find it worth the money to invest in good tooling. My keyboard was is actually and open boz/broken from manufacturer version of an OK one, I paid 37$. Worth twice that for how easy it makes typing and these are bad switches mind you.
Be good to try something cheaper, though the single-height enter key would drive me CRAZY.
[0] http://www.keyboardco.com/keyboard/realforce-88ub-45g-key-bl.... £192!!