It's easy to forget the massive leaps that we've made in computing technology in the last 30 years... In 1983, $1000 wouldn't even buy you a 5 MB hard drive - a hard drive, by the way, that was roughly the size and weight of a brick. A year later in 1984, Apple Macintosh 128k retailed for $2500. If the technology had actually existed to build this phone in 1983, I imagine the cost would have been in the six figure range, at least.