Computer stuff for my dad

My mom picked my dad up one of them large (19") flat panel computer screens the other day to go with his computer so he can see the screen better. Now I want to get him one of those large key keyboards - think they're called Googol or something like that. Has larger sized keys for people that have a hard time hitting the small standard keys or for anyone that works in low light.

Right now the cheapest ones I can find are in the $50 and up range, but I am watching for one I can afford to get for him. They have to have been around long enough that they'll start coming down in price to the same range as a standard keyboard - right?