As an experienced web scraper, I thrive on projects like this - where speed, precision and thoroughness are essential. And I appreciate your transparency about the budget and extent of the work. Having worked on numerous similar projects, I can confidently assure you that I'll provide the 'top-to-bottom' data from the 4 main categories of the Prolians site in the Shopify CSV format you require. No hiccups, no delays.
Familiar with technologies such as Data Mining and Excel and with a strong skill-set in Web Scraping, I'm well-acquainted with working with large-scale and complex data collections. Rest assured, I'm competent in navigating the site's hierarchy to extract all relevant product data including title, description, images, price and variants.
Furthermore, my general business workflow aligns well with your expectations: understanding project needs thoroughly, delivering constant communication updates, making necessary adaptations in real-time and finally providing polished deliverables that meet 100% of your requirements. Lastly, bearing in mind your desire to possibly work together on future projects; allow me to show you firsthand how trustworthy and proficient I am by way of this task.