Hello,
My name is Rui Pimentel and I've more than 8 years of experience in development of web crawling applications, PHP based.
My policy with every customers is to provide a free demo, in a matter of hours, with no commitment in proof that I have the needed skills for the job.
I assure you my work is fast and reliable, and I totally understand the goal of your project, so if you show interest in having me working on this, I would be more than happy to develop a quick demo for you.
Also, my bid is not fixed and might be adjusted after knowing all the details.
I'm looking forward to have a great relationship with you.
Best Regards,
Rui Pimentel