Re: A beautiful HP-70 Message #3 Posted by Michael de Estrada on 8 Mar 2011, 2:31 p.m., in response to message #2 by Juergen Keller
HP wanted this model to be a much less expensive economy financial calculator that cost a lot less than the HP-80. So they replaced the fancy metal clamshell jewel case with a cardboard box and the nice black soft leather calculator case with a plastic zipper case to lower costs. Another advantage of the cardboard box is that it could also be used for shipping, since in the early days HP calcs were not sold over the counter, except at HP outlets. HP also eliminated the separate Quick Reference Guide, although they improved the Owner's Handbook by making it spiral bound. When HP introduced the HP-80 in 1973 the price was $395, whereas when they introduced the HP-70 in 1974 the price was reduced to $275. The problem is that it was still not cheap, and when the more powerful HP-22 was introduced in 1975 for $165, that sealed its fate, and very few were sold, which is why they are so rare and fetch such a high price today.
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