Hello,
I am ready to implement a scraper/crawler for you. I'm not sure yet whether what you have described is possible at all. Can you please let me know the website you need to scrape data from? Are product IDs to be published available if you log in?
My background: I am a professional web developer with more than 7 years of extensive hands-on experience in PHP, HTML, CSS, JavaScript, JQuery, MySQL and other web technologies.
I look forward to working with you on this project.
Thanks,
Alexey