|Re: No, but these are exceptions|
Message #3 Posted by Ron Ross on 11 July 2003, 10:50 a.m.,
in response to message #1 by bill platt
No, as a general rule. Examples where the algebraics have little value
Hp6s trash (and I am being kind)
Hp20s great low end calc, directly compariable to an Hp21s
Hp19b financial with trig (makes this desirable)
All of the above are usually sold below retail, either past or present. Some are really discounted, ie 38G and 39G are 30 cents on the dollar. I did not bother to list Hp's dual mode calculators, since they are sought after as RPN models.
Now for the exceptions and reasons why.
Hp21s Statistics calculator higher retail therefore less sold than an Hp20s but nearly identical to 20s aside from stats features. Any statician who had one and loses will be desperate to find, no real substitute short of a graphics.
Hp22s comparable in functions and cababilities to an Hp32s, Hp quality in an algebraic package.
Hp27s comparable to an Hp42s, need I say more (no, however, it is not an Hp42s but best algebraic pocket calculator ever made).
None of the three above have anything compariable available to replace them (very similiar to the Hp32/42 delimma). That is why they command high prices.