I am looking for statistics on shareware sales.  Specifically I would
like to know :
1) On average how many people who download trial versions of software
(either crippleware, nagware or time limited versions) actually end up
paying to get the full or restriction free version.
2) What is the average price range typically charged for full or
restriction free versions of shareware.  For example, 15% of shareware
is under $10, 32% is $10 - $20, 27% is $20 to $30 and so on.
I would like the statistics to be as recent as possible (ie ideally
from 2004 or 2003).

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Clarification of Question by chisao-ga on 07 Jun 2005 06:53 PDT

The statistics can be drawn from actual sales figures in the industry
or from a survey of shareware providers, as long as the survey is of
sufficient sample size to be statistically valid and represent a
reasonable cross section of the industry.