Hello,
I am the premier Perl scripting expert on these freelancing sites. I have experience using public domain packages to emulate a browser accessing a site to parse the HTML returned for data or links to follow.
In my experience a well-designed scraping script requires 4-10 hours to design, code and test thoroughly. At my standard consulting rate on this site, then any scraper would be at least US$120. This fee would be for a script to access a site. I will not access a site to dump data after testing. That will be your responsibility.
I remind all clients wanting a scraping script that I will not be responsible should the site layout change. Nor will I be responsible if a site blocks access to a script.
Unless sites are very close in layout (using a similar script?), I would not anticipate much to gain from a large number projects. Hence, I foresee little prospect for discounts. However, your confidence in my reliability should increase.
Sorry, I have not done any scripting within browsers. I have done emulations of browsers, maintaining local cookies through transactions, for instance.
A milestone payment for the full budget for this project must be deposited with this site before your offer can be accepted.
Alan Idler
Chief Software Architect
Idleswell Software Creations