in reply to How to calculate development time?
First, know that HTML::Mason does NOT need to be run under mod_perl. It's a bit nicer if you can, but it's still wonderful if you have to run under CGI. I'm doing this with www.globalview-intl.com, which is hosted at www.korksoft.com.
Korksoft's hosting plans, by the way, are very reasonably priced, and they offer a lot of great stuff including Mason, MySQL, ssh access, and so on. They're also good about installing Perl modules at your request. Getting support can be slow, but it comes eventually and this drawback is outweighed by the rest.