Hello Sr.
I'm Jorge from Argentina, a responsible person who have wide experience working with Web Data Extraction (Scraping) projects as you can read in my Portfolio.
Sr., I read the attached PDF document. Would be fine to receive from your part, the credentials for each website to check it in deep. Also, if the websites have a search form to find products within them, I'd like to know the rule to search for products. Message me.
Thousands of projects done succesfully at the moment (within this platform and outside it), with different websites challenges (captcha security, javascript, ajax, flash, use of Proxies). Also, with a wide variety of amount of data collected. Since few records to millions. Even, if the job is an on going one, I usually save the scripts to run them in the future (this reduces the time, and probably the quote for my client).
I'm interested to help you on this specific scope you have in mind, may we could discuss further and agree the workflow to receive the data/script/program you are looking for, the estimated time and quote.
Finally, I'll invite you to visit my Portfolio mentioned above, to know me more in deep and see what people says about my jobs. This is the link: https://www.freelancer.com/u/PigtailXL.html
No more Sr., don't hesitate to contact me, I'll be glad to answer you.
Have a nice time.
Regards.
Jorge.
P.S.: I will not accept any previous award, before to discuss with you all the details