Using the SLOC-by-Language model and an application that does this based on COCOMO model, Person-Months, this is the estimated cost of commissioning DIASER and DSI code development (raw coding hours):
£53,500 DIASER http://www.diaser.org.uk before code tidy and optimisation.
£27,000 DSI http://interlinux.co.uk/wordpress/?p=371
C is a more expensive low-level language, Perl is high level. Of course this does not take in to account the relative success of, or design value to the commercial Open Source communities, Interlinux Ltd and HE partners of the code bases.
The JISC funded component of DIASER, minus administration time, approx 11% of the total DIASER code base at the time of writing. The JISC are among a set of very good development catalysts – see this ebook to find out more.
References:
http://www.dwheeler.com/sloccount [latest version used]
http://www.linuxfoundation.org/publications/estimatinglinux.php
http://en.wikipedia.org/wiki/Source_lines_of_code
http://en.wikipedia.org/wiki/COCOMO
Damian